http://lod.bco-dmo.org/id/dataset/638203
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
2016-02-10
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Chlorophyll and pheopigments from filtered water samples from R/V Savannah cruises in the South Atlantic Bight (SAB) continental shelf off Long Bay, January-April 2012 (Long Bay Wintertime Bloom project)
2016-02-10
publication
2016-02-10
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2021-03-01
publication
https://doi.org/10.26008/1912/bco-dmo.638203.1
James Nelson
Skidaway Institute of Oceanography
principalInvestigator
Catherine Edwards
Skidaway Institute of Oceanography
principalInvestigator
Harvey E. Seim
University of North Carolina at Chapel Hill
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: Nelson, J., Edwards, C., Seim, H. E. (2021) Chlorophyll and pheopigments from filtered water samples from R/V Savannah cruises in the South Atlantic Bight (SAB) continental shelf off Long Bay, January-April 2012 (Long Bay Wintertime Bloom project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2016-02-10 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.638203.1 [access date]
Chlorophyll and pheopigments from filtered water samples Dataset Description: Methods and Sampling: <p>At selected stations and depths, Niskin water samples were collected using the ship’s CTD/carousel water sampler (Sea-Bird SBE 25 Sealogger CTD; Sea-Bird SBE 32C carousel pylon; 8-L Ocean Test Equipment Model 110 external-closure water sampling bottles).&nbsp; Samples were transferred to 2 L polycarbonate bottles from the Niskin bottles via Tycon tubing and processed in the ship’s wet lab.&nbsp; Triplicate samples (250 mL) were filtered onto GF/F glass fiber filters.&nbsp; The filters were folded and inserted into screw-capped cyrovials labelled with a cyropen (date, station, depth, volume filtered, replicate number), then frozen in liquid nitrogen.&nbsp; Sample information was recorded on a sample log sheet that was scanned for an electronic pdf record after each cruise. &nbsp;</p>
<p>Samples were stored in liquid nitrogen until analyzed at the shore laboratory.&nbsp; Analysis was by the fluorometric method, based on JGOFS protocols (1996).&nbsp; Frozen filters were placed in a polyethylene tube to which 10 mL 90% acetone was added for extraction. &nbsp;After several hours extraction in the freezer, the filters were disrupted using a probe-type sonicator, with care to keep samples cold and in dim light.&nbsp; Filter debris was cleared by centrifugation and the cleared extracts were decanted into cylindrical glass cuvettes and read in a Turner Designs Model 10AU fluorometer, with readings recorded before and after addition of one drop 2 N HCl.&nbsp; Chlorophyll and phaeopigment concentrations were calculated as described in the JGOFS protocols (1996).&nbsp; The fluorometer scale factor (calibration factor) was determined using a chlorophyll reference solution (90% acetone extract of a filtered diatom culture) with the reference concentration determined spectrophotometrically (extinction at 664 nm) using a Cary Model 3 spectrophotometer.&nbsp; The stability of the laboratory fluorometer over time was tracked by periodic measurements of a stable fluorescence reference solution (Basic Blue 3 in Milli-Q water).</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1032285 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1032285
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1032276 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1032276
completed
James Nelson
Skidaway Institute of Oceanography
jim.nelson@skio.usg.edu
pointOfContact
Catherine Edwards
Skidaway Institute of Oceanography
(912) 598-2471
10 Ocean Science Circle
Savannah
GA
31411
USA
catherine.edwards@skio.uga.edu
pointOfContact
Harvey E. Seim
University of North Carolina at Chapel Hill
(919) 962-2083
3117G Venable Hall, CB#3300
Chapel Hill
NC
27599-3300
USA
hseim@email.unc.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
cruise_id
year
cast
month_gmt
day_gmt
time_gmt
yrday_gmt
ISO_DateTime_UTC
lat
lon
depth_max
station
comment
depth_sample
Chl_Avg
Chl_SD
Phaeo_Avg
Phaeo_SD
CTD
CTD SBE 25
SBE 33
theme
None, User defined
Cruise identfier
year
cast
month_gmt
day of month
time of day
UTC day of year and decimal time
ISO_DateTime_UTC
latitude
longitude
depth_max
station
comments
depth
chlorophyll a
standard deviation
total phaeopigment
featureType
BCO-DMO Standard Parameters
CTD - profiler
Fluorometer
Sea-Bird SBE 25 Sealogger CTD
Sea-Bird SBE 33 Carousel Deck Unit
Spectrophotometer
instrument
BCO-DMO Standard Instruments
SAV-12-02
SAV-12-03
SAV-12-05
SAV-12-11
SAV-12-14
service
Deployment Activity
South Atlantic Bight (SAB) continental shelf off Long Bay (-79W, 32N; -77W, 34 N)
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.
Mechanisms of nutrient input at the shelf margin supporting persistent winter phytoplankton blooms downstream of the Charleston Bump
http://nccoos.org/projects/long-bay-wintertime-blooms/
Mechanisms of nutrient input at the shelf margin supporting persistent winter phytoplankton blooms downstream of the Charleston Bump
<p><strong>NSF Project Title:</strong> Mechanisms of nutrient input at the shelf margin supporting persistent winter phytoplankton blooms downstream of the Charleston Bump</p>
<p>Sustained phytoplankton blooms along the outer South Atlantic Bight (SAB) continental shelf off Long Bay are observed in winter in multi-year satellite chlorophyll imagery. This section of the shelf lies north of the "Charleston Bump" (between 32.5-33.5°N), where the Gulf Stream is often strongly deflected offshore. Due to this offshore deflection, this is not an area where nutrient input to the shelf would be enhanced by upwelling associated with Gulf Stream frontal eddies, a major mechanism of nutrient input in other parts of the SAB shelf (Lee et al., 1991). Yet prior in situ observations suggest that there is recurring input of nutrients from the upper slope to the outer shelf off Long Bay from winter to early spring. This project will investigate a fundamental aspect of physical-biological coupling in the outer shelf to upper slope region. The PIs will test the hypotheses that: 1) the persistence of winter blooms on the outer shelf off Long Bay results from repeated episodes of nutrient input and mixing which maintains nutrient-sufficient conditions for extended periods; 2) several physical mechanisms are involved, including enhanced mixing energy from the internal tide along this section of the upper slope/shelf break; 3) the relatively high nutrient, intermittently turbulent environment will favor larger bloom-forming phytoplankton. The latter could have important implications for higher trophic levels, including early life history strategies of fish that spawn along the shelf margin off Long Bay in winter to early spring.</p>
<p>This project will combine several maturing observational technologies to address the following:</p>
<p>1. What is the frequency and magnitude on on-shelf transport of nitrate from the upper slope?<br />
2. What are the mechanisms of nutrient delivery from the upper slope to the outer continental shelf zone that are operating off Long Bay under the range of hydrographic and forcing conditions encountered in winter?<br />
3. What is the 3-D structure of outer shelf hydrography and associated winter bloom features and how do these evolve through multiple nutrient input/mixing events?<br />
4. What are the rates of nitrate utilization and primary production associated with the winter blooms?<br />
5. Does the winter regime consistently favor a bloom assemblage dominated by larger diatom forms?</p>
<p>Near-continuous cross-shelf and upper slope observations will be obtained with two autonomous gliders, time-series measurements on the outer shelf and slope from a set of moored instruments (including a moored profiling system at the shelf break), and repeated cross- and along-shelf ship surveys using a towed, undulating package. Ship station work will include measurements of primary production and on-board analyses of key functional characteristics of the phytoplankton assemblage (cell forms, abundance, size and bio-volume distributions) using a microfluidics/imaging system. In combination, these systems will provide a level of spatial and temporal resolution of physical, nutrient and biological fields that could not be achieved in earlier, station-based field studies and the basis for improved understanding of physical mechanisms of recurring nutrient input to the shelf, and how the nutrient, mixing, and circulation regime in winter structures the phytoplankton community. Coastal naturalists will be engaged through a seabird survey component of the field program that will augment existing information on pelagic seabirds in winter and define their association with oceanographic features on the central South Atlantic Bight shelf and slope.</p>
<p>This project will provide a deeper understanding of shelf/slope exchange processes and how these influence shelf ecosystems, generating information that will contribute to implementation of ecosystem-based management in the region.</p>
<p>References:<br />
Lee, T. N., J. A. Yoder, and L. P. Atkinson, 1991: Gulf Stream frontal eddy influence on productivity of the southeast U.S. continental shelf. J. Geophys. Res, 96, 22191-22205.<br />
</p>
Long Bay Wintertime Bloom
largerWorkCitation
project
eng; USA
oceans
South Atlantic Bight (SAB) continental shelf off Long Bay (-79W, 32N; -77W, 34 N)
-78.748
-77.86
32.483
33.312
2012-01-20
2012-04-04
outer South Atlantic Bight (SAB) continental shelf off Long Bay
0
BCO-DMO catalogue of parameters from Chlorophyll and pheopigments from filtered water samples from R/V Savannah cruises in the South Atlantic Bight (SAB) continental shelf off Long Bay, January-April 2012 (Long Bay Wintertime Bloom 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/638266.rdf
Name: cruise_id
Units: unitless
Description: <p>2012 cruise number for the R/V Savannah</p>
http://lod.bco-dmo.org/id/dataset-parameter/638267.rdf
Name: year
Units: yyyy
Description: <p>year</p>
http://lod.bco-dmo.org/id/dataset-parameter/638268.rdf
Name: cast
Units: unitless
Description: <p>cast number</p>
http://lod.bco-dmo.org/id/dataset-parameter/638269.rdf
Name: month_gmt
Units: 1-12
Description: <p>GMT month</p>
http://lod.bco-dmo.org/id/dataset-parameter/638270.rdf
Name: day_gmt
Units: 1-31
Description: <p>GMT day of month</p>
http://lod.bco-dmo.org/id/dataset-parameter/638271.rdf
Name: time_gmt
Units: HH:MM:SS
Description: <p>GMT time</p>
http://lod.bco-dmo.org/id/dataset-parameter/638272.rdf
Name: yrday_gmt
Units: day.part of day
Description: <p>year day: UTC 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/638273.rdf
Name: ISO_DateTime_UTC
Units: yyyy-mm-ddTHH:MM:SSZ
Description: <p>Date/Time (UTC) ISO formatted standard is based on ISO 8601:2004(E) and takes on any of the following forms: 2009-08-30T14:05:00Z (UTC time)</p>
http://lod.bco-dmo.org/id/dataset-parameter/638274.rdf
Name: lat
Units: decimal degrees
Description: <p>latitude; north is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/638275.rdf
Name: lon
Units: decimal degrees
Description: <p>longitude; east is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/638276.rdf
Name: depth_max
Units: meters
Description: <p>maximum depth of cast</p>
http://lod.bco-dmo.org/id/dataset-parameter/638277.rdf
Name: station
Units: unitless
Description: <p>station: LB# = Middle Transect; LBS# = South Transect; LBN# = North Transect; # = distance counter (km) starting with +00 inshore and increasing offshore</p>
http://lod.bco-dmo.org/id/dataset-parameter/638278.rdf
Name: comment
Units: unitless
Description: <p>comment</p>
http://lod.bco-dmo.org/id/dataset-parameter/638279.rdf
Name: depth_sample
Units: meters
Description: <p>Depth of water sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/638280.rdf
Name: Chl_Avg
Units: mg/m^3
Description: <p>average concentration of chlorophyll for replicate samples (n=3)</p>
http://lod.bco-dmo.org/id/dataset-parameter/638281.rdf
Name: Chl_SD
Units: mg/m^3
Description: <p>standard deviation of mean chlorophyll concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/638282.rdf
Name: Phaeo_Avg
Units: mg/m^3
Description: <p>concentration of phaeopigments (chlorophyll-equivalent mass)</p>
http://lod.bco-dmo.org/id/dataset-parameter/638283.rdf
Name: Phaeo_SD
Units: mg/m^3
Description: <p>standard deviation of mean phaeopigment concentration</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
16795
https://darchive.mblwhoilibrary.org/bitstream/1912/26750/1/dataset-638203_lb2012shipchl__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.638203.1
download
onLine
dataset
<p>At selected stations and depths, Niskin water samples were collected using the ship’s CTD/carousel water sampler (Sea-Bird SBE 25 Sealogger CTD; Sea-Bird SBE 32C carousel pylon; 8-L Ocean Test Equipment Model 110 external-closure water sampling bottles).&nbsp; Samples were transferred to 2 L polycarbonate bottles from the Niskin bottles via Tycon tubing and processed in the ship’s wet lab.&nbsp; Triplicate samples (250 mL) were filtered onto GF/F glass fiber filters.&nbsp; The filters were folded and inserted into screw-capped cyrovials labelled with a cyropen (date, station, depth, volume filtered, replicate number), then frozen in liquid nitrogen.&nbsp; Sample information was recorded on a sample log sheet that was scanned for an electronic pdf record after each cruise. &nbsp;</p>
<p>Samples were stored in liquid nitrogen until analyzed at the shore laboratory.&nbsp; Analysis was by the fluorometric method, based on JGOFS protocols (1996).&nbsp; Frozen filters were placed in a polyethylene tube to which 10 mL 90% acetone was added for extraction. &nbsp;After several hours extraction in the freezer, the filters were disrupted using a probe-type sonicator, with care to keep samples cold and in dim light.&nbsp; Filter debris was cleared by centrifugation and the cleared extracts were decanted into cylindrical glass cuvettes and read in a Turner Designs Model 10AU fluorometer, with readings recorded before and after addition of one drop 2 N HCl.&nbsp; Chlorophyll and phaeopigment concentrations were calculated as described in the JGOFS protocols (1996).&nbsp; The fluorometer scale factor (calibration factor) was determined using a chlorophyll reference solution (90% acetone extract of a filtered diatom culture) with the reference concentration determined spectrophotometrically (extinction at 664 nm) using a Cary Model 3 spectrophotometer.&nbsp; The stability of the laboratory fluorometer over time was tracked by periodic measurements of a stable fluorescence reference solution (Basic Blue 3 in Milli-Q water).</p>
Specified by the Principal Investigator(s)
<p>Water sample concentrations of particulate chlorophyll and pheopigments (in chlorophyll equivalents) were calculated as described in the JGOFS Protocols (1996).</p>
<p><strong>BCO-DMO Processing:</strong></p>
<p>- added conventional header with dataset name, PI name, version date<br />
- renamed parameters to BCO-DMO standard<br />
- changed ~ to nr_ ('near')<br />
- changed blank flag cells to '-'</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
CTD
CTD
PI Supplied Instrument Name: CTD PI Supplied Instrument Description:Sea-Bird SBE 25 Sealogger CTD; Sea-Bird SBE 33 deck box; Sea-Bird SBE 32C carousel pylon; Sea-Bird SBE 43 oxygen sensor; WET Labs ECO chlorophyll fluorometer; WET Labs ECO CDOM fluorometer; WET Labs ECO BB optical backscatter sensor; LI-COR 193SA PAR sensor; Sea-Bird SBE 5P pump. The carousel was equipped with eight 8-L external-closure water sampling bottles (Ocean Test Equipment Model 110). Instrument Name: CTD - profiler Instrument Short Name: Instrument Description: The Conductivity, Temperature, Depth (CTD) unit is an integrated instrument package designed to measure the conductivity, temperature, and pressure (depth) of the water column. The instrument is lowered via cable through the water column. It permits scientists to observe the physical properties in real-time via a conducting cable, which is typically connected to a CTD to a deck unit and computer on a ship. The CTD is often configured with additional optional sensors including fluorometers, transmissometers and/or radiometers. It is often combined with a Rosette of water sampling bottles (e.g. Niskin, GO-FLO) for collecting discrete water samples during the cast.
This term applies to profiling CTDs. For fixed CTDs, see https://www.bco-dmo.org/instrument/869934. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/130/
PI Supplied Instrument Name: PI Supplied Instrument Description:Turner Designs Model 10AU fluorometer Instrument Name: Fluorometer Instrument Short Name:Fluorometer Instrument Description: A fluorometer or fluorimeter is a device used to measure parameters of fluorescence: its intensity and wavelength distribution of emission spectrum after excitation by a certain spectrum of light. The instrument is designed to measure the amount of stimulated electromagnetic radiation produced by pulses of electromagnetic radiation emitted into a water sample or in situ. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/113/
CTD SBE 25
CTD SBE 25
PI Supplied Instrument Name: CTD SBE 25 PI Supplied Instrument Description:Sea-Bird SBE 25 Sealogger CTD Instrument Name: Sea-Bird SBE 25 Sealogger CTD Instrument Short Name:CTD SBE 25 Instrument Description: The Sea-Bird SBE 25 SEALOGGER CTD is battery powered and is typically used to record data in memory, eliminating the need for a large vessel, electrical sea cable, and on-board computer. All SBE 25s can also operate in real-time, transmitting data via an opto-isolated RS-232 serial port. Temperature and conductivity are measured by the SBE 3F Temperature sensor and SBE 4 Conductivity sensor (same as those used on the premium SBE 9plus CTD). The SBE 25 also includes the SBE 5P (plastic) or 5T (titanium) Submersible Pump and TC Duct. The pump-controlled, TC-ducted flow configuration significantly reduces salinity spiking caused by ship heave, and in calm waters allows slower descent rates for improved resolution of water column features. Pressure is measured by the modular SBE 29 Temperature Compensated Strain-Gauge Pressure sensor (available in eight depth ranges to suit the operating depth requirement). The SBE 25's modular design makes it easy to configure in the field for a wide range of auxiliary sensors, including optional dissolved oxygen (SBE 43), pH (SBE 18 or SBE 27), fluorescence, transmissivity, PAR, and optical backscatter sensors. More information from Sea-Bird Electronics: http:www.seabird.com. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0040/
SBE 33
SBE 33
PI Supplied Instrument Name: SBE 33 Instrument Name: Sea-Bird SBE 33 Carousel Deck Unit Instrument Short Name:SBE 33 Instrument Description: The rack-mountable SBE 33 provides power and real-time data acquisition and control for an SBE 32 Carousel Water Sampler that has the SBE 33 interface option installed in its pylon. The SBE 33 is compatible with all Carousel sizes - full size, compact, and sub-compact. When powered and controlled by the SBE 33, the Carousel can be used:
- with an SBE 19, 19plus, 19plus V2, 25, 25plus, or 49 CTD
- without a CTD
- with a Neil Brown Mk III CTD (requires optional interface for both SBE 32 and 33)
The SBE 33 can also provide power and real-time data acquisition and control for the smaller SBE 55 ECO Water Sampler used with an SBE 19, 19plus, 19plus V2, 25, 25plus, or 49 CTD, or no CTD.
See http://www.seabird.com/sbe33-deck-unit for further details.
PI Supplied Instrument Name: PI Supplied Instrument Description:Cary Model 3 spectrophotometer Instrument Name: Spectrophotometer Instrument Short Name:Spectrophotometer Instrument Description: An instrument used to measure the relative absorption of electromagnetic radiation of different wavelengths in the near infra-red, visible and ultraviolet wavebands by samples. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB20/
Cruise: SAV-12-02
SAV-12-02
R/V Savannah
Community Standard Description
R/V Savannah
vessel
SAV-12-02
James Nelson
Skidaway Institute of Oceanography
Cruise: SAV-12-03
SAV-12-03
R/V Savannah
Community Standard Description
R/V Savannah
vessel
SAV-12-03
James Nelson
Skidaway Institute of Oceanography
Cruise: SAV-12-05
SAV-12-05
R/V Savannah
Community Standard Description
R/V Savannah
vessel
SAV-12-05
James Nelson
Skidaway Institute of Oceanography
Cruise: SAV-12-11
SAV-12-11
R/V Savannah
Community Standard Description
R/V Savannah
vessel
SAV-12-11
James Nelson
Skidaway Institute of Oceanography
Cruise: SAV-12-14
SAV-12-14
R/V Savannah
Community Standard Description
R/V Savannah
vessel
SAV-12-14
James Nelson
Skidaway Institute of Oceanography
R/V Savannah
Community Standard Description
R/V Savannah
vessel