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Earth Observing Laboratory
Field Data Archive

Depth-integrated midwater pollock biomass in June, July, and August 2010 (B62)

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Summary

This data set contains measurements of midwater walleye pollock biomass during annual or biennial acoustic-trawl surveys conducted by the Midwater Assessment and Conservation Engineering (MACE) Program, Resource Assessment and Conservation Engineering (RACE) Division, of the National Oceanic and Atmospheric Administration - National Marine Fisheries Service (NOAA-NMFS) Alaska Fisheries Science Center (AFSC). The survey was conducted from 05 June 2010 through 07 August 2010 using the NOAA Ship Oscar Dyson. Midwater and bottom trawling was used to determine the species and length frequency composition of detected aggregations of fish. Pollock biomass (kg) was computed by applying length-specific target strength values and a length-weight relationship to 38 kHz backscatter data classified as pollock. The summary data set submitted here includes pollock biomass values summed between 16 m below the sea surface and 3 m above the seafloor within a rectangle with a north-south distance of 0.5 nmi (averaging distance along the survey transect) and an east-west distance of 20 nmi (interpolation distance 10 nmi to either side of the survey transect).

Data access

  • ORDER data for delivery by FTP

Additional information

Identifier
Versions
  • 1.0 (2011-12-09)
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Spatial Type point
Language English
ISO Topic Categories
  • biota
  • oceans
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Temporal coverage

Begin datetime 2010-06-05 00:00:00
End datetime 2010-08-07 23:59:00

Spatial coverage


Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 63.00, Minimum (South) Latitude: 54.00
Minimum (West) Longitude: -180.00, Maximum (East) Longitude: -163.00

Primary point of contact information

Patrick H. Ressler <Patrick.Ressler@noaa.gov>

Additional contact information

Citation

Ressler, P. 2011. Depth-integrated midwater pollock biomass in June, July, and August 2010. Version 1.0. UCAR/NCAR - Earth Observing Laboratory. https://doi.org/10.5065/D6MP5189. Accessed 09 Nov 2024.

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NSF

This material is based upon work supported by the NSF National Center for Atmospheric Research, a major facility sponsored by the U.S. National Science Foundation and managed by the University Corporation for Atmospheric Research. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the U.S. National Science Foundation.