ME70 Water Column Sonar Data Collected During DY1201
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. 'ME70 Water Column Sonar Data Collected During DY1201'. NOAA National Centers for Environmental Information. doi:10.7289/V5FJ2DQS [access date]
- DY1201_ME70
- doi:10.7289/V5FJ2DQS
- NCEI Metadata ID:gov.noaa.ngdc.mgg.wcd:DY1201_ME70
gov.noaa.ngdc.mgg.wcd:DY1201_ME70
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Ordering Instructions | Contact the NCEI Water Column Sonar Data Manager to order data. |
Distributor | NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Dataset Point of Contact | NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Dataset Point of Contact | Water Column Sonar Data Manager NOAA National Centers for Environmental Information (303) 497-4742 wcd.info@noaa.gov |
Time Period | 2012-02-12T23:59:15 to 2012-02-22T19:19:02 |
Spatial Reference System | urn:ogc:def:crs:EPSG::4326Vertical Datum: Unknown |
Spatial Bounding Box Coordinates |
West:-163.234061537
East:-151.8867995
South:54.331708575
North:58.0173372
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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: 2020-06-03
For questions about the information on this page, please email:ncei.info@noaa.gov