Shumagin Islands Acoustic-Trawl Survey of Walleye Pollock (DY1201, ME70)
The Midwater Assessment and Conservation Engineering (MACE) program of the Alaska
Fisheries Science Center (AFSC) conducted an acoustic-trawl (AT) stock assessment
survey in the Gulf of Alaska (GOA) during the late winter of 2012 to estimate the
distribution and abundance of walleye pollock (Gadus chalcogrammus). The survey areas
included the Shumagin Islands (February 15-16, 2012) and Sanak Trough (February 17-20,
2012). The survey was conducted onboard NOAA Ship Oscar Dyson, a 64 meter stern trawler
equipped with acoustic and oceanographic instrumentation in addition to trawling and
biological sampling capabilities. The primary instrumentation for the survey was a
Simrad EK60 split-beam echosounder system utilizing five frequencies (18, 38, 70,
120, and 200 kHz) and a Simrad ME70 multibeam echosounder, with the ME70 trigger slaved
to the EK60 system.
- Cite as: Alaska Fisheries Science Center (2012): Water Column Sonar Data Collection (DY1201, ME70). National Geophysical Data Center, NOAA. doi:10.7289/V5FJ2DQS [access date]
- DY1201_ME70
- doi:10.7289/V5FJ2DQS
gov.noaa.ngdc.mgg.wcd:DY1201_ME70
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Ordering Instructions | Contact the Water Column Sonar Data Manager to order data |
Distributor | Chuck Anderson Water Column Sonar Data Manager DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (303) 497-4742 wcd.info@noaa.gov |
Dataset Principal Investigator | Chris Wilson Supervisory Research Fish Biologist DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center (206) 526-6435 chris.wilson@noaa.gov |
Time Period | 2012-02-12T23:59:15 to 2012-02-22T19:19:02 |
Spatial Reference System | urn:ogc:def:crs:EPSG:4326 |
Spatial Bounding Box Coordinates |
N: 58.0173372
S: 54.331708575
E: -151.8867995
W: -163.234061537
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Documentation links not available. |
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Dataset Progress Status | Complete - production of the data has been completed |
Data Update Frequency | Not planned |
Purpose | Acoustic-trawl survey of walleye pollock in Shumagins and Sanak Trough areas of the Gulf of Alaska |
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Theme keywords | Global Change Master Directory (GCMD) Science Keywords
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Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
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Instrument keywords | Global Change Master Directory (GCMD) Instrument Keywords
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Place keywords | International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas"
publication S-23)
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Last Modified: 2017-05-30
For questions about the information on this page, please email: wcd.info@noaa.gov