http://lod.bco-dmo.org/id/dataset/520594
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
2014-07-23
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 an R/V BIP cruise in the Guaymas Basin, Gulf of California in 2013 (Jumbo Squid El Nino Response project)
2014-07-23
publication
2014-07-23
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2019-12-30
publication
https://doi.org/10.1575/1912/bco-dmo.520594.1
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. (2014) Nautical Area Scattering Coefficients (NASC) from an R/V BIP cruise in the Guaymas Basin, Gulf of California in 2013 (Jumbo Squid El Nino Response project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2014-07-23 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.520594.1 [access date]
Nautical Area Scattering Coefficients (NASC) from BIP XII cruise, Guaymas Basin. Dataset Description: <p>Integrated, area scattering values, or Natuical Area Scattering Coefficients (NASC) are provided from one cruise in the Guaymas Basin that occurred October 2013. 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>Note that noise removal from this data set (e.g. splash down, electrical interference, and CTD casts) was minimal before integration. 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>
<p>Related References:<br />
See Benoit-Bird &amp; Gilly (2012) and Hoving et al. (2013).</p>
<p>Related project: <a href="http://www.bco-dmo.org/project/2279" target="_blank">Hypoxia and the ecology, behavior and physiology of jumbo squid, <em>Dosidicus gigas</em></a> (http://www.bco-dmo.org/project/2279)</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>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&nbsp;nmi-2)&nbsp;are provided. Noise removal from this data set (e.g. splash down, electrical interference, and CTD casts) was minimal before integration.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1338432 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1338432
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
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
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
BIPXII_10_2013
service
Deployment Activity
Guaymas Basin, Gulf of California
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.
Adaptable life history strategy of a migratory large predator in response to El Nino and climate change
https://osprey.bco-dmo.org/project/520407
Adaptable life history strategy of a migratory large predator in response to El Nino and climate change
<p><em>Description from NSF award abstract:</em><br />
This project will examine the response of <em>Dosidicus gigas</em> (Humboldt squid) to an El Niño event in 2009-2010 that was accompanied by a collapse of the commercial fishery for this squid in the Guaymas Basin within the Gulf of California. This large squid is a major predator of great ecological and economic importance in the Gulf of California, the California Current, and Peru Current systems. In early 2010, these squid abandoned their normal coastal-shelf habitats in the Guaymas Basin and instead were found in the Salsipuedes Basin to the north, an area buffered from the effects of El Niño by the upwelling of colder water. The commercial fishery also relocated to this region and large squid were not found in the Guaymas Basin from 2010-2012, instead animals that matured at an unusually small size and young age were abundant. A return to the large size-at-maturity condition has still not occurred, despite the apparent return of normal oceanographic conditions.</p>
<p>The El Niño of 2009-2010 presented an unforeseen opportunity to reveal an important feature of adaptability of <em>Dosidicus gigas</em> to an acute climatic anomaly, namely a large decrease in size and age at maturity. Now these investigators will have the opportunity to document recovery to the normal large size-at-maturity condition. The specific aims of this project are:</p>
<p>1) continue a program of acoustic surveys and direct sampling of squid that has already been established in the Gulf of California in order to assess distribution, biomass, life history strategy diet, and migratory and foraging behaviors relative to pre-El Niño conditions and<br />
2) conduct analogous surveys in Monterey Bay, California in conjunction with long-term remote operated vehicle surveys of squid abundance.</p>
<p>The data from these studies will provide a comparison of recovery in the two different squid populations and yield valuable insights into what ecological effects an area is expected to experience with an invasion of either small or large Humboldt squid. As long-term climate change progresses, squid of both forms may expand northward into the California Current System.</p>
<p>Related Project: <a href="http://www.bco-dmo.org/project/2279">Hypoxia and the ecology, behavior and physiology of jumbo squid, <em>Dosidicus gigas</em></a></p>
Jumbo Squid El Nino Response
largerWorkCitation
project
eng; USA
oceans
Guaymas Basin, Gulf of California
-113.3081006
-111.3343637
27.24179
28.8857926
2013-10-20
2013-10-25
Gulf of California and Monterey Bay
0
BCO-DMO catalogue of parameters from Nautical Area Scattering Coefficients (NASC) from an R/V BIP cruise in the Guaymas Basin, Gulf of California in 2013 (Jumbo Squid El Nino Response 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/520606.rdf
Name: date_start
Units: unitless
Description: <p>Date at start of integration bin. in the format YYYYmmdd</p>
http://lod.bco-dmo.org/id/dataset-parameter/520607.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/520608.rdf
Name: date_end
Units: unitless
Description: <p>Date at end of integration bin. in the format YYYYmmdd</p>
http://lod.bco-dmo.org/id/dataset-parameter/520609.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/520610.rdf
Name: NASC
Units: m2 nmi-2
Description: <p>Nautical Area Scattering Coefficient (NASC).</p>
http://lod.bco-dmo.org/id/dataset-parameter/520611.rdf
Name: lat_start
Units: decimal degrees
Description: <p>Latitude at start of integration bin.</p>
http://lod.bco-dmo.org/id/dataset-parameter/520612.rdf
Name: lon_start
Units: decimal degrees
Description: <p>Longitude at start of integration bin.</p>
http://lod.bco-dmo.org/id/dataset-parameter/520613.rdf
Name: lat_end
Units: decimal degrees
Description: <p>Latitude at end of integration bin.</p>
http://lod.bco-dmo.org/id/dataset-parameter/520614.rdf
Name: lon_end
Units: decimal degrees
Description: <p>Longitude at end of integration bin.</p>
http://lod.bco-dmo.org/id/dataset-parameter/520615.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/520616.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
115551
https://darchive.mblwhoilibrary.org/bitstream/1912/25085/1/dataset-520594_integrated-acoustic-scattering-bip__v1.tsv
download
https://doi.org/10.1575/1912/bco-dmo.520594.1
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>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&nbsp;nmi-2)&nbsp;are provided. Noise removal from this data set (e.g. splash down, electrical interference, and CTD casts) was minimal before integration.</p>
Specified by the Principal Investigator(s)
<p>BCO-DMO Processing Notes:<br />
- Modified parameter names to conform with BCO-DMO naming conventions.<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: BIPXII_10_2013
BIPXII_10_2013
R/V BIP XII
R/V BIP XII
vessel
BIPXII_10_2013
William Gilly
Stanford University
R/V BIP XII
R/V BIP XII
vessel