http://lod.bco-dmo.org/id/dataset/4013
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
2013-08-15
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Nautical Area Scattering Coefficients (NASC) from R/V New Horizon cruises NH1106 and NH1006 in the Guaymas Basin in 2010 and 2011 (Jumbo Squid Physiology project)
2013-08-15
publication
2013-08-15
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2019-11-12
publication
https://doi.org/10.1575/1912/bco-dmo.4013.1
Kelly Benoit-Bird
Oregon State University
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: Benoit-Bird, K. (2013) Nautical Area Scattering Coefficients (NASC) from R/V New Horizon cruises NH1106 and NH1006 in the Guaymas Basin in 2010 and 2011 (Jumbo Squid Physiology project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2013-08-15 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.4013.1 [access date]
Nautical Area Scattering Coefficients (NASC) from NH1006 and NH1106 cruises, Guaymas Basin. Dataset Description: <p>Integrated, area scattering values, or Natuical Area Scattering Coefficients (NASC) are provided from two cruises in the Guaymas Basin that occurred in June 2010 and June 2011. Also included are the time (UTC) and location at the start and end of each integration bin, mean depth of the exclusion line for each bin, and the average thickness of the integrated cell.</p>
<p>Raw acoustic scattering data (.raw files) are extremely large. These are archived at Oregon State University and will be shared using physical media upon request.</p> Methods and Sampling: <p>Acoustic data were collected nearly continuously using Simrad EK60s at 4 frequencies (38, 70, 120, and 200 kHz). Split beam transducers (Simrad model numbers: 38-12, 70-7c, 120-7c, 200-7c) were mounted 1.5 m below the surface on a rigid pole. Each transmitted a 512 us pulse as frequently as possible for the water depth. Raw data were stored using Simrad ER60 software.</p>
<p>Noise from splash down, electrical interference, and CTD casts were flagged as ‘bad data’ using Echoview software before integration. Acoustic backscattering values at 38 kHz that were greater than -75 dB were integrated in 1 km horizontal bins from depths of 5m to 500m or 1 m above the bottom, whichever was shallower. These integrated, area scattering values or Nautical Area Scattering Coefficients (NASC: m2 nmi-2) are provided.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0851239 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0851239
completed
Kelly Benoit-Bird
Oregon State University
541-737-2063
104 CEOAS Administration Building Oregon State University
Corvallis
OR
97331
United States
kbenoit@coas.oregonstate.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
cruise_id
cruise_start_date
cruise_end_date
date_start
time_start
date_end
time_end
NASC
lat_start
lon_start
lat_end
lon_end
exclusion_line_mean_depth
integration_layer_thickness_mean
Simrad EK-60 echosounder
theme
None, User defined
Cruise identfier
start_date
end_date
date begin
time_start
date end
time_end
No BCO-DMO term
latitude at start time of measurement
longitude at start time of measurement
latitude at end time of measurement
longitude at end time of measurement
featureType
BCO-DMO Standard Parameters
Simrad EK-60 echosounder
instrument
BCO-DMO Standard Instruments
NH1106
NH1006
service
Deployment Activity
Guaymas
Guaymas Basin
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.
Hypoxia and the ecology, behavior and physiology of jumbo squid, Dosidicus gigas
https://osprey.bco-dmo.org/project/2279
Hypoxia and the ecology, behavior and physiology of jumbo squid, Dosidicus gigas
<p>This project concerns the ecological physiology of<em> Dosidicus gigas</em>, a large squid endemic to the eastern Pacific where it inhabits both open ocean and continental shelf environments. Questions to be addressed include:<br />
1) How does utilization of the OML by <em>D. gigas</em> vary on both a daily and seasonal basis, and how do the vertical distributions of the OML and its associated fauna vary?<br />
2) What behaviors of squid are impaired by conditions found in the OML, and how are impairments compensated to minimize costs of utilizing this environment? and<br />
3) What are the physiological and biochemical processes by which squid maintain swimming activity at such remarkable levels under low oxygen conditions?</p>
<p>The investigators will use an integrated approach involving oceanographic, acoustic, electronic tagging, physiological and biochemical methods. <em>D. gigas</em> provides a trophic connection between small, midwater organisms and top vertebrate predators, and daily vertical migrations between near-surface waters and a deep, low-oxygen environment (OML) characterize normal behavior of adult squid. Electronic tagging has shown that this squid can remain active for extended periods in the cold, hypoxic conditions of the upper OML. Laboratory studies have demonstrated suppression of aerobic metabolism during a cold, hypoxic challenge, but anaerobic metabolism does not appear to account for the level of activity maintained. Utilization of the OML in the wild may permit daytime foraging on midwater organisms. Foraging also occurs near the surface at night, and Dosidicus may thus be able to feed continuously. <em>D. gigas</em> is present in different regions of the Guaymas Basin on a predicable year-round basis, allowing changes in squid distribution to be related to changing oceanographic features on a variety time scales.</p>
<p>This research is of broad interest because <em>Dosidicus gigas</em> has substantially extended its range over the last decade, and foraging on commercially important finfish in invaded areas off California and Chile has been reported. In addition, the OML has expanded during the last several decades, mostly vertically by shoaling, including in the Gulf of Alaska, the Southern California Bight and several productive regions of tropical oceans, and a variety of ecological impacts will almost certainly accompany changes in the OML. Moreover,<em> D. gigas</em> currently supports the world's largest squid fishery, and this study will provide acoustic methods for reliable biomass estimates, with implications for fisheries management in Mexico and elsewhere.</p>
<p>This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). This is a Collaborative Research project encompassing three NSF-OCE awards.</p>
<p><strong>Background Publications:</strong><br />
Stewart, J.S., Field, J.C., Markaida, U., and Gilly, W.F. 2013. Behavioral ecology of jumbo squid (<em>Dosidicus gigas</em>) in relation to oxygen minimum zones. Deep Sea Research Part II: Topical Studies in Oceanography, 95, 197-208. doi:<a href="http://dx.doi.org/10.1016/j.dsr2.2012.06.005" target="_blank">10.1016/j.dsr2.2012.06.005</a>.<br />
Gilly, W.F., Zeidberg, L.D., Booth, J.A.T, Stewart, J.S., Marshall, G., Abernathy, K., and Bell, L.E. 2012. Locomotion and behavior of Humboldt squid, <em>Dosidicus gigas</em>, in relation to natural hypoxia in the Gulf of California, Mexico. The Journal of Experimental Biology, 215, 3175-3190. doi: <a href="http://dx.doi.org/10.1242/jeb.072538" target="_blank">10.1242/jeb.072538</a>.</p>
<p>Related Project: <a href="http://www.bco-dmo.org/project/471887">Physiological limits to vertical migrations of the pelagic, jumbo squid, Dosidicus gigas in the Gulf of California</a></p>
Jumbo Squid Physiology
largerWorkCitation
project
eng; USA
oceans
Guaymas; Guaymas Basin
-113.2795402
-110.904157
27.2431833
28.8788278
2010-06-04
2011-06-22
Guaymas Basin, Gulf of California, Mexico (27 N 112 W) and Monterey Bay, CA (36 N 123 W)
0
BCO-DMO catalogue of parameters from Nautical Area Scattering Coefficients (NASC) from R/V New Horizon cruises NH1106 and NH1006 in the Guaymas Basin in 2010 and 2011 (Jumbo Squid Physiology 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/35922.rdf
Name: cruise_id
Units: text
Description: <p>Cruise identifier.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35923.rdf
Name: cruise_start_date
Units: unitless
Description: <p>Year, month, and day cruise began in YYYYmmdd format.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35924.rdf
Name: cruise_end_date
Units: unitless
Description: <p>Year, month, and day cruise ended in YYYYmmdd format.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35925.rdf
Name: date_start
Units: unitless
Description: <p>Date at start of integration bin in YYYYmmdd format.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35926.rdf
Name: time_start
Units: HHMM.mmmm
Description: <p>Time (UTC) at start of integration bin in hours, minutes, and decimal minutes.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35927.rdf
Name: date_end
Units: unitless
Description: <p>Date at end of integration bin in YYYYmmdd format.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35928.rdf
Name: time_end
Units: HHMM.mmmm
Description: <p>Time (UTC) at end of integration bin in hours, minutes, and decimal minutes.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35929.rdf
Name: NASC
Units: m2 nmi-2
Description: <p>Nautical Area Scattering Coefficient (NASC).</p>
http://lod.bco-dmo.org/id/dataset-parameter/35930.rdf
Name: lat_start
Units: decimal degrees
Description: <p>Latitude at start of integration bin.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35931.rdf
Name: lon_start
Units: decimal degrees
Description: <p>Longitude at start of integration bin.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35932.rdf
Name: lat_end
Units: decimal degrees
Description: <p>Latitude at end of integration bin.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35933.rdf
Name: lon_end
Units: decimal degrees
Description: <p>Longitude at end of integration bin.</p>
http://lod.bco-dmo.org/id/dataset-parameter/35934.rdf
Name: exclusion_line_mean_depth
Units: meters
Description: <p>Mean depth of the exclusion line for each bin. </p>
http://lod.bco-dmo.org/id/dataset-parameter/35935.rdf
Name: integration_layer_thickness_mean
Units: meters
Description: <p>Average thickness of the integrated cell.</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
599380
https://darchive.mblwhoilibrary.org/bitstream/1912/24812/1/dataset-4013_integrated-acoustic-scattering-nh__v1.tsv
download
https://doi.org/10.1575/1912/bco-dmo.4013.1
download
onLine
dataset
<p>Acoustic data were collected nearly continuously using Simrad EK60s at 4 frequencies (38, 70, 120, and 200 kHz). Split beam transducers (Simrad model numbers: 38-12, 70-7c, 120-7c, 200-7c) were mounted 1.5 m below the surface on a rigid pole. Each transmitted a 512 us pulse as frequently as possible for the water depth. Raw data were stored using Simrad ER60 software.</p>
<p>Noise from splash down, electrical interference, and CTD casts were flagged as ‘bad data’ using Echoview software before integration. Acoustic backscattering values at 38 kHz that were greater than -75 dB were integrated in 1 km horizontal bins from depths of 5m to 500m or 1 m above the bottom, whichever was shallower. These integrated, area scattering values or Nautical Area Scattering Coefficients (NASC: m2 nmi-2) are provided.</p>
Specified by the Principal Investigator(s)
<p>BCO-DMO Processing Notes:<br />
- Modified parameter names to conform with BCO-DMO naming conventions.<br />
- Replaced values of '999' in the lat and lon columns with 'nd' to indicate 'no data'.<br />
- Reformatted display of time from HH:MM:SS to HHMM.mmmm</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
Simrad EK-60 echosounder
Simrad EK-60 echosounder
PI Supplied Instrument Name: Simrad EK-60 echosounder PI Supplied Instrument Description:Acoustic data were collected nearly continuously using Simrad EK60s at 4 frequencies (38, 70, 120, and 200 kHz). Split beam transducers (Simrad model numbers: 38-12, 70-7c, 120-7c, 200-7c) were mounted 1.5 m below the surface on a rigid pole. Instrument Name: Simrad EK-60 echosounder Instrument Short Name:Simrad EK-60 echosounder Instrument Description: A split-beam scientific echosounder primarily designed for fisheries research. It can operate seven frequencies simultaneously ranging from 18 to 710 kHz. Real time echo integration and target strength analysis in an unlimited number of layers is provided as well as storage of raw data for replay or analysis in one of several post-processing software packages such as Simrad's BI60. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0198/
Cruise: NH1106
NH1106
R/V New Horizon
Community Standard Description
International Council for the Exploration of the Sea
R/V New Horizon
vessel
NH1106
Brad Seibel
University of Rhode Island
Cruise: NH1006
NH1006
R/V New Horizon
Community Standard Description
International Council for the Exploration of the Sea
R/V New Horizon
vessel
NH1006
Brad Seibel
University of Rhode Island
R/V New Horizon
Community Standard Description
International Council for the Exploration of the Sea
R/V New Horizon
vessel