ME70 Water Column Sonar Data Collected During DY1103
DY1103 Gulf of Alaska ME70. ME70 data collected during the NOAA ship Oscar Dyson summer
2011 Gulf of Alaska pollock survey.
2011 Gulf of Alaska pollock survey.
- Cite as: Alaska Fisheries Science Center. 2012. 'ME70 Water Column Sonar Data Collected During DY1103'. NOAA National Centers for Environmental Information. https://doi.org/10.7289/V5QC01D6 [access date]
- DY1103_ME70
- doi:10.7289/V5QC01D6
- NCEI Metadata ID:gov.noaa.ngdc.mgg.wcd:DY1103_ME70
gov.noaa.ngdc.mgg.wcd:DY1103_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 | 2011-06-15T09:16:48 to 2011-08-12T22:51:59 |
Spatial Reference System | urn:ogc:def:crs:EPSG::4326Vertical Datum: Unknown |
Spatial Bounding Box Coordinates |
West:-170.0937
East:-151.0974
South:52.3302
North:59.2459
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Dataset Progress Status | Complete - production of the data has been completed |
Data Update Frequency | Not planned |
Purpose | Scientists from the Midwater Assessment and Conservation Engineering (MACE) Program of the Alaska Fisheries Science Center's (AFSC) Resource Assessment and Conservation Engineering (RACE) Division routinely conduct acoustic-trawl (AT) stock assessment surveys to estimate the distribution and abundance of walleye pollock (Theragra chalcogramma). The summer 2011 cruise onboard NOAA Ship Oscar Dyson was conducted from June 9, 2011 to August 9, 2011 in the western-central Gulf fo Alaska. Acoustic data was collected using Simrad EK60 scientific echosounder and Simrad ME70 multibeam echosounder systems mounted on the hull of the Oscar Dyson. The purposes of the cruise included the collection of acoustic and trawl data necessary to determine the distribution, biomass, and biological composition of walleye pollock and other major fish species; calibrate the EK60 and ME70 acoustic systems using standard sphere calibration techniques; collect physical oceanographic data (temperature and salinity profiles) at selected sites, and continuously collect sea surface temperature and salinity data; conduct trawl hauls (AWT, PNE, and Methot) to ground truth multi-frequency echo integration data collection; collect data on fish distributions and school characteristics and the seafloor using the ME70 multibeam echosounder. |
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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: 2020-12-30
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