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    • ES60 Water Column Sonar Data Collected During BE201301

    Metadata Updated: January 13, 2023

    A broad-scale, baseline acoustic-trawl surveys of pelagic fishes were conducted in late summer 2013 over the continental shelf of the ice-free U.S. northern Bering and Chukchi Seas on the F/V Bristol Explorer, a 55 m chartered fishing vessel. The goal of this work was to characterize the abundance and distribution of abundant pelagic fishes in the area to better understand the structure and function of these ecosystems. Fish species of interest included commercial subarctic species, which could expand northward in response to warming. The survey was conducted along 0.5 degree spaced transect lines from 59.75N to 73N between 170W and 157W. The primary water column acoustic instrument for the survey was a Simrad ES60 scientific echosounder equipped with a Simrad ES38-10 38 kHz transducer and ES120-7C 120 kHz transducer. The ship departed Dutch Harbor, AK on 01 August 2013, making intermediate port calls to Nome AK before ending in Dutch Harbor, AK on 29 September 2013. The echosounder was calibrated with a 38.1 mm tungsten-carbide sphere via the standard sphere method during the survey in the southern Chukchi Sea on 13 August 2013. The results of these surveys and further description of data collection are available in: De Robertis, A., Taylor, K., Wilson, C., and Farley, E. 2017. Abundance and Distribution of Arctic cod (Boreogadus saida) and other Pelagic Fishes over the U.S. Continental Shelf of the Northern Bering and Chukchi Seas Deep-Sea Research II, 135: 51-65. http://dx.doi.org/10.1016/j.dsr2.2016.03.002

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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    Dates

    Metadata Date December 27, 2022
    Metadata Created Date January 13, 2023
    Metadata Updated Date January 13, 2023
    Reference Date(s) August 1, 2013 (creation), December 27, 2022 (publication)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from NGDC MGG Sonar Water Column

    Other Data Resources

    Additional Metadata

    Resource Type Series
    Metadata Date December 27, 2022
    Metadata Created Date January 13, 2023
    Metadata Updated Date January 13, 2023
    Reference Date(s) August 1, 2013 (creation), December 27, 2022 (publication)
    Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
    Contact Email
    Guid gov.noaa.ncei:BE201301_ES60_processed
    Access Constraints Cite as: NOAA Alaska Fisheries Science Center. 2022. ES60 Water Column Sonar Data Collected During BE201301. NOAA National Centers for Environmental Information. https://doi.org/10.25921/ffk8-8b11 [access date], Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose., Resource may not be available for up to one year after initial collection.
    Bbox East Long -155.12192
    Bbox North Lat 72.56519
    Bbox South Lat 53.8445
    Bbox West Long -170.05888
    Coupled Resource
    Frequency Of Update notPlanned
    Harvest Object Id 2784a2c0-9284-4024-8ecb-bb0bfa9ce1fb
    Harvest Source Id ab8b0290-e4db-4a00-89f2-4e427c2054b2
    Harvest Source Title NGDC MGG Sonar Water Column
    Licence These data are considered raw and have not been subjected to the NOAA's quality control or quality assurance procedures. They are released for limited public use as preliminary data to be used only with appropriate caution. NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty., Not subject to copyright protection within the United States.
    Lineage Calibrated w/ calibration data
    Metadata Language eng; USA
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-170.05888, 53.8445], [-155.12192, 53.8445], [-155.12192, 72.56519], [-170.05888, 72.56519], [-170.05888, 53.8445]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System urn:ogc:def:crs:EPSG::4326
    Spatial Harvester True
    Temporal Extent Begin 2013-08-01T00:00:00
    Temporal Extent End 2013-09-29T11:59:59

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