http://lod.bco-dmo.org/id/dataset/3111
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2010-06-16
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
AK-LTOP MOCNESS tow zooplankton abundance and biomass from R/V Alpha Helix, R/V Wecoma multiple cruises in the Northeast Pacific from 1997-2004 (NEP project)
2009-04-29
publication
2009-04-29
revision
National Oceanographic Data Center (NODC)
2013-10-30
publication
http://accession.nodc.noaa.gov/0113956
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2020-01-20
publication
https://doi.org/10.1575/1912/bco-dmo.3111.1
Kenneth O. Coyle
University of Alaska Fairbanks
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Coyle, K. (2009) AK-LTOP MOCNESS tow zooplankton abundance and biomass from R/V Alpha Helix, R/V Wecoma multiple cruises in the Northeast Pacific from 1997-2004 (NEP project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2009-04-29 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.3111.1 [access date]
AK-LTOP MOCNESS tow zooplankton abundance/biomass Dataset Description: <p><strong>MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004</strong></p>
<!--
<p>updated July 2008</p>
-->
<p>All data are for 1 meter-square nets, 5 mm mesh, oblique hauls.</p> Methods and Sampling: <p><strong>GLOBEC 2000: Gulf of Alaska Long-Term Observation Program</strong><br />
<em>T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)</em></p>
<p>This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.</p>
<p><strong><em>Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.</em></strong></p>
<table border="1">
<tbody>
<tr>
<th colspan="1" rowspan="2">Month</th>
<th colspan="4" rowspan="1">Sampling</th>
<th colspan="3" rowspan="1">Physical Rationale</th>
<th colspan="1" rowspan="2">Biological Rationale</th>
</tr>
<tr>
<td>CTD</td>
<td>Nutrients</td>
<td>Zoo</td>
<td>Fish</td>
<td>Winds</td>
<td>Disch</td>
<td>Strat</td>
</tr>
<tr>
<td>March</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>&nbsp;</td>
<td>D S</td>
<td>L</td>
<td>W</td>
<td>Zooplankton migrate from depth (at shelfbreak); transported inshore.</td>
</tr>
<tr>
<td>April</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>&nbsp;</td>
<td>D M</td>
<td>L-M</td>
<td>W V</td>
<td>Phytoplankton bloom</td>
</tr>
<tr>
<td>May</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>&nbsp;</td>
<td>D M-W</td>
<td>M</td>
<td>M V</td>
<td>Maximum oceanic copepod biomass.</td>
</tr>
<tr>
<td>July</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>D/U W</td>
<td>M-H</td>
<td>S</td>
<td>Maximum zooplankton abundance; YOY salmon enter shelf.</td>
</tr>
<tr>
<td>August</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>D/U W</td>
<td>M-H</td>
<td>S</td>
<td>Maximum YOY salmon abundance on shelf.</td>
</tr>
<tr>
<td>October</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>D S</td>
<td>H</td>
<td>H</td>
<td>YOY salmon on shelf.</td>
</tr>
<tr>
<td>December</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>&nbsp;</td>
<td>D S</td>
<td>M</td>
<td>M</td>
<td>Fall-winter pre-conditioning for spring nutrients, small zooplankton.</td>
</tr>
</tbody>
</table>
<p>The sampling protocol followed GLOBEC guidelines and used gear types and techniques similar to those in the Oregon LTOP that was also a part of the NEP-GLOBEC program. Most of the research was conducted from the R/V <em>Alpha Helix</em>. Fish sampling was done from a chartered trawler in July, August, and October. Both vessels worked together during these cruises so that the fishing charter could verify fish targets detected on the acoustics array towed from the <em>Alpha Helix</em>.</p>
<p><em>This information was last updated on September 22, 2000.<br />
&nbsp; </em></p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0109078 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0109078
Funding provided by National Oceanic and Atmospheric Administration (NOAA) Award Number: unknown NEP NOAA
completed
Kenneth O. Coyle
University of Alaska Fairbanks
907-474-7705
Institute of Marine Science University of Alaska Fairbanks, School of Fisheries & Ocean Sciences
Fairbanks
AK
99775-7220
USA
coyle@ims.uaf.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
year
cruise_id
tow
sta_id
net
lat
lon
depth_min
depth_max
month_local
day_local
yrday_local
date_local
time_local
vol_filt
species
stage
NODC_code
abundance
biomass
MOCNESS1
theme
None, User defined
year
Cruise identfier
tow
station id
net
latitude
longitude
depth
month_local
day_local
day of year and decimal time (local time zone)
date_local
time_local
volume of water filtered
species scientific name (binomial)
stage
taxon_code
abundance
wet_weight_biomass
featureType
BCO-DMO Standard Parameters
MOCNESS1
instrument
BCO-DMO Standard Instruments
HX201
HX203
HX205
HX208
HX211
HX215
HX217
HX218
HX219
HX223
HX225
HX228
HX230
HX231
HX234
HX237
HX239
HX241
HX243
HX246
HX248
HX252
HX254
HX257
HX258
HX262
HX263
HX267
HX269
HX270
HX272
HX276
HX279
HX281
HX283
HX286
HX292
W0307A
service
Deployment Activity
Northeast Pacific
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
U.S. GLOBal ocean ECosystems dynamics
http://www.usglobec.org/
U.S. GLOBal ocean ECosystems dynamics
U.S. GLOBEC (GLOBal ocean ECosystems dynamics) is a research program organized by oceanographers and fisheries scientists to address the question of how global climate change may affect the abundance and production of animals in the sea.
The U.S. GLOBEC Program currently had major research efforts underway in the Georges Bank / Northwest Atlantic Region, and the Northeast Pacific (with components in the California Current and in the Coastal Gulf of Alaska). U.S. GLOBEC was a major contributor to International GLOBEC efforts in the Southern Ocean and Western Antarctic Peninsula (WAP).
U.S. GLOBEC
largerWorkCitation
program
U.S. GLOBEC Northeast Pacific
http://nepglobec.bco-dmo.org
U.S. GLOBEC Northeast Pacific
<p><strong>Program in a Nutshell</strong></p>
<p><strong>Goal: </strong> To understand the effects of climate variability and climate change on the distribution, abundance and production of marine animals (including commercially important living marine resources) in the eastern North Pacific. To embody this understanding in diagnostic and prognostic ecosystem models, capable of capturing the ecosystem response to major climatic fluctuations.</p>
<p><strong>Approach: </strong>To study the effects of past and present climate variability on the population ecology and population dynamics of marine biota and living marine resources, and to use this information as a proxy for how the ecosystems of the eastern North Pacific may respond to future global climate change. The strong temporal variability in the physical and biological signals of the NEP will be used to examine the biophysical mechanisms through which zooplankton and salmon populations respond to physical forcing and biological interactions in the coastal regions of the two gyres. Annual and interannual variability will be studied directly through <strong>long-term observations</strong> and detailed <strong>process studies</strong>; variability at longer time scales will be examined through <strong>retrospective analysis</strong> of directly measured and proxy data. Coupled <strong>biophysical models</strong> of the ecosystems of these regions will be developed and tested using the process studies and data collected from the long-term observation programs, then further tested and improved by hindcasting selected retrospective data series.</p>
NEP
largerWorkCitation
project
eng; USA
oceans
Northeast Pacific
-149.4913
-144.1596
58.046
60.7973
1997-10-13
2004-10-08
Northeast Pacific Ocean, Gulf of Alaska
0
BCO-DMO catalogue of parameters from AK-LTOP MOCNESS tow zooplankton abundance and biomass from R/V Alpha Helix, R/V Wecoma multiple cruises in the Northeast Pacific from 1997-2004 (NEP project)
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/17242.rdf
Name: year
Units: unitless
Description: <p>year, reported as YYYY, e.g. 1995</p>
http://lod.bco-dmo.org/id/dataset-parameter/17243.rdf
Name: cruise_id
Units: text
Description: <p>cruise designation; name</p>
http://lod.bco-dmo.org/id/dataset-parameter/17244.rdf
Name: tow
Units: dimensionless
Description: <p>Tow number.</p>
http://lod.bco-dmo.org/id/dataset-parameter/17245.rdf
Name: sta_id
Units: dimensionless
Description: <p>Station identification.</p>
http://lod.bco-dmo.org/id/dataset-parameter/17246.rdf
Name: net
Units: dimensionless
Description: <p>Net number.</p>
http://lod.bco-dmo.org/id/dataset-parameter/17247.rdf
Name: lat
Units: decimal degrees
Description: <p>latitude, in decimal degrees, North is positive, negative denotes South</p>
http://lod.bco-dmo.org/id/dataset-parameter/17248.rdf
Name: lon
Units: decimal degrees
Description: <p>longitude, in decimal degrees, East is positive, negative denotes West</p>
http://lod.bco-dmo.org/id/dataset-parameter/17249.rdf
Name: depth_min
Units: meters
Description: <p>minimum depth of net sampling</p>
http://lod.bco-dmo.org/id/dataset-parameter/17250.rdf
Name: depth_max
Units: meters
Description: <p>maximum depth during net sampling</p>
http://lod.bco-dmo.org/id/dataset-parameter/17251.rdf
Name: month_local
Units: mm (01 to 12)
Description: <p>Month of year, local time.</p>
http://lod.bco-dmo.org/id/dataset-parameter/17252.rdf
Name: day_local
Units: dd (0 to 31)
Description: <p>Day, local time.</p>
http://lod.bco-dmo.org/id/dataset-parameter/17253.rdf
Name: yrday_local
Units: dimensionless
Description: <p>Local day and decimal time, as 326.5 for the 326th day of the year, or November 22 at 1200 hours (noon).</p>
http://lod.bco-dmo.org/id/dataset-parameter/17254.rdf
Name: date_local
Units: unitless
Description: <p>Local month, day and year. in the format mm/dd/yyyy</p>
http://lod.bco-dmo.org/id/dataset-parameter/17255.rdf
Name: time_local
Units: HHMM
Description: <p>Time of day, local time, using 2400 clock format.</p>
http://lod.bco-dmo.org/id/dataset-parameter/17256.rdf
Name: vol_filt
Units: meters^3
Description: <p>volume of water filtered</p>
http://lod.bco-dmo.org/id/dataset-parameter/17257.rdf
Name: species
Units: text
Description: <p>A binomial that consists of a genus name followed by the species name of an organism.</p>
http://lod.bco-dmo.org/id/dataset-parameter/17258.rdf
Name: stage
Units: text
Description: <p>Organism life history stage.</p>
http://lod.bco-dmo.org/id/dataset-parameter/17259.rdf
Name: NODC_code
Units: dimensionless
Description: <p>Taxonomic group or entity code, a ten digit number based on the NODC Taxonomic List.</p>
http://lod.bco-dmo.org/id/dataset-parameter/17260.rdf
Name: abundance
Units: number per meter<sup>3</sup>
Description: <p>number of the specific taxa/group counted</p>
http://lod.bco-dmo.org/id/dataset-parameter/17261.rdf
Name: biomass
Units: grams/meter^3
Description: <p>wet weight of a specific taxa/group identified</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
14815047
https://darchive.mblwhoilibrary.org/bitstream/1912/25205/1/dataset-3111_moc-zoop-ak-ltop__v1.tsv
download
https://doi.org/10.1575/1912/bco-dmo.3111.1
download
onLine
dataset
<p><strong>GLOBEC 2000: Gulf of Alaska Long-Term Observation Program</strong><br />
<em>T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)</em></p>
<p>This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.</p>
<p><strong><em>Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.</em></strong></p>
<table border="1">
<tbody>
<tr>
<th colspan="1" rowspan="2">Month</th>
<th colspan="4" rowspan="1">Sampling</th>
<th colspan="3" rowspan="1">Physical Rationale</th>
<th colspan="1" rowspan="2">Biological Rationale</th>
</tr>
<tr>
<td>CTD</td>
<td>Nutrients</td>
<td>Zoo</td>
<td>Fish</td>
<td>Winds</td>
<td>Disch</td>
<td>Strat</td>
</tr>
<tr>
<td>March</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>&nbsp;</td>
<td>D S</td>
<td>L</td>
<td>W</td>
<td>Zooplankton migrate from depth (at shelfbreak); transported inshore.</td>
</tr>
<tr>
<td>April</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>&nbsp;</td>
<td>D M</td>
<td>L-M</td>
<td>W V</td>
<td>Phytoplankton bloom</td>
</tr>
<tr>
<td>May</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>&nbsp;</td>
<td>D M-W</td>
<td>M</td>
<td>M V</td>
<td>Maximum oceanic copepod biomass.</td>
</tr>
<tr>
<td>July</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>D/U W</td>
<td>M-H</td>
<td>S</td>
<td>Maximum zooplankton abundance; YOY salmon enter shelf.</td>
</tr>
<tr>
<td>August</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>D/U W</td>
<td>M-H</td>
<td>S</td>
<td>Maximum YOY salmon abundance on shelf.</td>
</tr>
<tr>
<td>October</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>D S</td>
<td>H</td>
<td>H</td>
<td>YOY salmon on shelf.</td>
</tr>
<tr>
<td>December</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>&nbsp;</td>
<td>D S</td>
<td>M</td>
<td>M</td>
<td>Fall-winter pre-conditioning for spring nutrients, small zooplankton.</td>
</tr>
</tbody>
</table>
<p>The sampling protocol followed GLOBEC guidelines and used gear types and techniques similar to those in the Oregon LTOP that was also a part of the NEP-GLOBEC program. Most of the research was conducted from the R/V <em>Alpha Helix</em>. Fish sampling was done from a chartered trawler in July, August, and October. Both vessels worked together during these cruises so that the fishing charter could verify fish targets detected on the acoustics array towed from the <em>Alpha Helix</em>.</p>
<p><em>This information was last updated on September 22, 2000.<br />
&nbsp; </em></p>
from Cruise: HX203 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX205 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX208 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX211 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX215 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX217 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX218 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX219 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX223 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX225 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX228 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX230 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX231 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX234 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX237 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX239 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX241 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX243 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX246 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX248 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX252 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX254 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX257 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX258 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX262 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX263 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX267 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX269 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX270 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX272 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX276 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX279 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX281 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX283 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX286 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: HX292 Dataset description
MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004
all data are for 1 meter-square nets, 5 mm mesh, oblique hauls.
Acquisition description
GLOBEC 2000: Gulf of Alaska Long-Term Observation Program
T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)
This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.
Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.
Month Sampling Physical Rationale Biological Rationale
CTD Nutrients Zoo Fish Winds Disch Strat
March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore.
April X X X D M L-M W V Phytoplankton bloom
May X X X D M-W M M V Maximum oceanic copepod biomass.
July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf.
August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf.
October X X X X D S H H YOY salmon on shelf.
December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton.
The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix.
This information was last updated on September 22, 2000.
Maintained by:
Hal Batchelder [hbatchelder@coas.oregonstate.edu
College of Oceanic & Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064
from Cruise: W0307A <p>Dataset description MOCNESS catch data - zooplankton species abundance and biomass, 1997 - 2004 all data are for 1 meter-square nets, 5 mm mesh, oblique hauls. Acquisition description GLOBEC 2000: Gulf of Alaska Long-Term Observation Program T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University) This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon. Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period. Month Sampling Physical Rationale Biological Rationale CTD Nutrients Zoo Fish Winds Disch Strat March X X X D S L W Zooplankton migrate from depth (at shelfbreak); transported inshore. April X X X D M L-M W V Phytoplankton bloom May X X X D M-W M M V Maximum oceanic copepod biomass. July X X X X D/U W M-H S Maximum zooplankton abundance; YOY salmon enter shelf. August X X X X D/U W M-H S Maximum YOY salmon abundance on shelf. October X X X X D S H H YOY salmon on shelf. December X X X D S M M Fall-winter pre-conditioning for spring nutrients, small zooplankton. The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V Alpha Helix. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the Alpha Helix. This information was last updated on September 22, 2000. Maintained by: Hal Batchelder [hbatchelder@coas.oregonstate.edu College of Oceanic & Atmospheric Sciences Oregon State University Corvallis, OR 97331-5503 phone: 541-737-4500; FAX 541-737-2064</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
MOCNESS1
MOCNESS1
PI Supplied Instrument Name: MOCNESS1 PI Supplied Instrument Description:5 mm mesh Instrument Name: MOCNESS1 Instrument Short Name:MOC1 Instrument Description: The Multiple Opening/Closing Net and Environmental Sensing System or MOCNESS is a family of net systems based on the Tucker Trawl principle. The MOCNESS-1 carries nine 1-m2 nets usually of 335 micrometer mesh and is intended for use with the macrozooplankton. All nets are black to reduce contrast with the background. A motor/toggle release assembly is mounted on the top portion of the frame and stainless steel cables with swaged fittings are used to attach the net bar to the toggle release. A stepping motor in a pressure compensated case filled with oil turns the escapement crankshaft of the toggle release which sequentially releases the nets to an open then closed position on command from the surface. -- from the MOCNESS Operations Manual (1999 + 2003). Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/NETT0097/
Cruise: HX201
HX201
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX201
Dr Thomas J. Weingartner
University of Alaska Fairbanks
Cruise: HX203
HX203
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX203
Dr Thomas J. Weingartner
University of Alaska Fairbanks
Cruise: HX205
HX205
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX205
Dr Thomas J. Weingartner
University of Alaska Fairbanks
Cruise: HX208
HX208
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX208
Dr Thomas C. Royer
Old Dominion University
Cruise: HX211
HX211
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX211
Seth L. Danielson
University of Alaska Fairbanks
Cruise: HX215
HX215
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX215
Seth L. Danielson
University of Alaska Fairbanks
Cruise: HX217
HX217
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX217
Dr Thomas J. Weingartner
University of Alaska Fairbanks
Cruise: HX218
HX218
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX218
Dr Thomas J. Weingartner
University of Alaska Fairbanks
Cruise: HX219
HX219
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX219
Seth L. Danielson
University of Alaska Fairbanks
Cruise: HX223
HX223
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX223
Seth L. Danielson
University of Alaska Fairbanks
Cruise: HX225
HX225
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX225
Seth L. Danielson
University of Alaska Fairbanks
Cruise: HX228
HX228
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX228
Seth L. Danielson
University of Alaska Fairbanks
Cruise: HX230
HX230
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX230
Seth L. Danielson
University of Alaska Fairbanks
Cruise: HX231
HX231
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX231
Dr Thomas C. Royer
Old Dominion University
Cruise: HX234
HX234
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX234
Dr Thomas J. Weingartner
University of Alaska Fairbanks
Cruise: HX237
HX237
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX237
Dr Thomas J. Weingartner
University of Alaska Fairbanks
Cruise: HX239
HX239
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX239
Seth L. Danielson
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx239cr.pdf
Report describing HX239
Cruise: HX241
HX241
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX241
Dr Thomas C. Royer
Old Dominion University
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx241cr.pdf
Report describing HX241
Cruise: HX243
HX243
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX243
Dr Thomas J. Weingartner
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx243cr.pdf
Report describing HX243
Cruise: HX246
HX246
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX246
Dr Dean A. Stockwell
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx246cr.pdf
Report describing HX246
Cruise: HX248
HX248
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX248
Seth L. Danielson
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx248cr.pdf
Report describing HX248
Cruise: HX252
HX252
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX252
Seth L. Danielson
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx252cr.pdf
Report describing HX252
Cruise: HX254
HX254
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX254
Dr Thomas J. Weingartner
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx254cr.pdf
Report describing HX254
Cruise: HX257
HX257
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX257
Dr Thomas C. Royer
Old Dominion University
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx257cr.pdf
Report describing HX257
Cruise: HX258
HX258
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX258
Seth L. Danielson
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx258cr.pdf
Report describing HX258
Cruise: HX262
HX262
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX262
Seth L. Danielson
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx262cr.pdf
Report describing HX262
Cruise: HX263
HX263
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX263
Seth L. Danielson
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx263cr.pdf
Report describing HX263
Cruise: HX267
HX267
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX267
Seth L. Danielson
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx267cr.pdf
Report describing HX267
Cruise: HX269
HX269
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX269
Dr Thomas J. Weingartner
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx269cr.pdf
Report describing HX269
Cruise: HX270
HX270
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX270
Dr Thomas C. Royer
Old Dominion University
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx270cr.pdf
Report describing HX270
Cruise: HX272
HX272
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX272
Dr Thomas J. Weingartner
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx272cr.pdf
Report describing HX272
Cruise: HX276
HX276
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX276
Dr Thomas J. Weingartner
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx276cr.pdf
Report describing HX276
Cruise: HX279
HX279
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX279
Dr Thomas J. Weingartner
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx279cr.pdf
Report describing HX279
Cruise: HX281
HX281
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX281
Seth L. Danielson
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx281cr.pdf
Report describing HX281
Cruise: HX283
HX283
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX283
Seth L. Danielson
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx283cr.pdf
Report describing HX283
Cruise: HX286
HX286
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX286
Russell R. Hopcroft
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx286cr.pdf
Report describing HX286
Cruise: HX292
HX292
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
HX292
Sarah Thornton
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/hx292cr.pdf
Report describing HX292
Cruise: W0307A
W0307A
R/V Wecoma
Community Standard Description
NERC Vocabulary Server
R/V Wecoma
vessel
W0307A
Dr Thomas J. Weingartner
University of Alaska Fairbanks
http://globec.whoi.edu/nep/reports/cgoa_cruises/w0307acr.pdf
Report describing W0307A
R/V Alpha Helix
Community Standard Description
International Council for the Exploration of the Sea
R/V Alpha Helix
vessel
R/V Wecoma
Community Standard Description
NERC Vocabulary Server
R/V Wecoma
vessel