Depth-integrated midwater pollock biomass in June, July, and August 2009 (B62)

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 09 June 2009 through 07 August 2009 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).

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Temporal Range

  • Begin:  2009-06-09T00:00:00Z
    End:  2009-08-07T23:59:00Z


Resource Type dataset
Temporal Range Begin 2009-06-09T00:00:00Z
Temporal Range End 2009-08-07T23:59:00Z
Temporal Resolution N/A
Bounding Box North Lat 63.00000
Bounding Box South Lat 54.00000
Bounding Box West Long 175.00000
Bounding Box East Long -160.00000
Spatial Representation grid
Spatial Resolution N/A
Related Links

Documentation #1 : B62-Midwater_pollock_2009_metadata.html

Documentation #2 : pollock_biomass-2009.png

Additional Information N/A
Resource Format CSV: Comma Separated Value (text/csv)
XML: Extensible Markup Language (application/xml)
Standardized Resource Format ASCII
Asset Size 1 MB
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Access Constraints none
Software Implementation Language N/A

Resource Support Name EOL Data Support
Resource Support Email
Resource Support Organization UCAR/NCAR - Earth Observing Laboratory
Distributor UCAR/NCAR - Earth Observing Laboratory
Metadata Contact Name EOL Data Support
Metadata Contact Email
Metadata Contact Organization UCAR/NCAR - Earth Observing Laboratory

Author Patrick H. Ressler
Publisher UCAR/NCAR - Earth Observing Laboratory
Publication Date 2013-11-06T18:30:36
Digital Object Identifier (DOI)
Alternate Identifier 245.B62-016
Resource Version 1.0
Topic Category biota
Progress completed
Metadata Date 2024-02-07T22:45:11Z
Metadata Record Identifier edu.ucar.eol::245.B62-016
Metadata Language eng; USA
Suggested Citation Patrick H. Ressler. (2013). Depth-integrated midwater pollock biomass in June, July, and August 2009 (B62). 1.0. UCAR/NCAR - Earth Observing Laboratory. Accessed 18 June 2024.

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