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EK60-ek5 Water Column Sonar Data Collected During SH1904

Acoustic-Trawl Surveys of Walleye Pollock (Gadus chalcogrammus) in the Gulf of Alaska (SH2019-04). The Midwater Assessment and Conservation Engineering (MACE) program of NOAA Fisheries, Alaska Fisheries Science Center (AFSC) conducted acoustic-trawl (AT) stock assessment surveys in the Shelikof Strait, Chirikof shelf break,and Marmot Bay areas of the Gulf of Alaska (GOA) in the late winter/early spring of 2019 to estimate the distribution and abundance of walleye pollock (Gadus chalcogrammus). This survey was conducted aboard NOAA Ship Bell M. Shimada, a 64 meter stern trawler equipped with acoustic and oceanographic instrumentation. The primary acoustic instrument for the survey was a Simrad EK60 split-beam echosounder system utilizing five frequencies (18, 38, 70, 120, and 200 kHz). The vessel departed Kodiak, Alaska on 6 March and conducted an acoustic system calibration in Kalsin Bay, Kodiak Island 7 March. The Shelikof Strait was conducted 7-16 March, the Chirikof shelf break sure was conducted 16-18 March, and the Marmot Bay survey was conducted 19-20 March. A post-cruise acoustic system calibration was conducted 20-21 March in Kalsin Bay and the vessel arrived in Kodiak, Alaska on 21 March.
  • Cite as: NOAA Alaska Fisheries Science Center. 2023. EK60-ek5 Water Column Sonar Data Collected During SH1904. NOAA National Centers for Environmental Information. https://doi.org/10.25921/6qe7-9v46 [access date]
gov.noaa.ncei:SH1904_EK60-ek5
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  • AWS Cloud Storage Bucket (download)
    AWS Cloud Storage to provide additional public access to water column sonar data through the NOAA Open Data Dissemination project (NODD)
Distribution Formats
  • EK60-ek5 (Version:1)
    • File Specification: Simrad EK60 data logged with Echolog 500. These files contain EK60 data telegrams output by an EK60 on its Ethernet port. The .ek5 file contains binary Ethernet packets as output by the Simrad echosounder. The EK60 manual contains full details of the EK60 Ethernet telegram formats and should be consulted for interpreting the Ethernet packets recorded within an .ek5 file. These data re early generation EK60 data from the transition period from the EK500 to EK60 echosounder.
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 2019-03-05T00:00:00 to 2019-03-21T11:59:59
Spatial Reference System urn:ogc:def:crs:EPSG::4326Vertical Datum: Unknown
Spatial Bounding Box Coordinates
West:-157.0565
East:-151.54883
South:55.56733
North:58.74583
Spatial Coverage Map
General Documentation
Associated Resources
    Publication Dates
    • creation: 2019-03-05
    • publication: 2023-01-19
    Dataset Progress Status Complete - production of the data has been completed
    Data Update Frequency Not planned
    Purpose Acoustic-trawl (AT) stock assessment surveys of walleye pollock (Gadus chalcogrammus) in the Shelikof Strait, Chirikof shelf break, and Marmot Bay areas of the Gulf of Alaska (GOA) 6-21 March 2019.
    Use Limitations
    • 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.
    Dataset Citation
    • Cite as: NOAA Alaska Fisheries Science Center. 2023. EK60-ek5 Water Column Sonar Data Collected During SH1904. NOAA National Centers for Environmental Information. https://doi.org/10.25921/6qe7-9v46 [access date]
    Cited Authors
    • DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center
    Principal Investigators
    • Chris Wilson
      DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center
    Custodians
    • NOAA National Centers for Environmental Information
    Publishers
    • NOAA National Centers for Environmental Information
    Theme keywords Global Change Master Directory (GCMD) Science Keywords
    • Earth Science > Oceans > Ocean Acoustics > Acoustic Scattering
    • Earth Science > Oceans > Aquatic Sciences > Fisheries
    • Earth Science > Oceans > Ocean Acoustics
    • Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Pelagic
    • Earth Science > Biosphere > Ecosystems > Marine Ecosystems
    • Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Benthic
    • Earth Science > Biosphere > Ecosystems > Aquatic Ecosystems
    • Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry
    • Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
    Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
    Instrument keywords Global Change Master Directory (GCMD) Instrument Keywords
    • In Situ/Laboratory Instruments > Profilers/Sounders > Acoustic Sounders > WCMS > Water Column Mapping System
    Place keywords International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)
    • Gulf of Alaska
    Global Change Master Directory (GCMD) Location Keywords
    • Vertical Location > Water Column
    Use Constraints
    • Cite as: NOAA Alaska Fisheries Science Center. 2023. EK60-ek5 Water Column Sonar Data Collected During SH1904. NOAA National Centers for Environmental Information. https://doi.org/10.25921/6qe7-9v46 [access date]
    • 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.
    Access Constraints
    • 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.
    • Resource may not be available for up to one year after initial collection.
    Fees
    • Free
    Lineage information for:series
    Processor
    • DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center
    Acquisition Information (collection)
    Instrument
    • Simrad EK60
    • Simrad ME70
    • Simrad EK60
    • Simrad ES60
    • Furuno FE700
    • Sea-Bird SBE 9
    • POS/MV 320
    • Eppley PIR
    • SBE SeaCat 21
    • RM Young 61202V
    • RM Young 41382VC
    • RM Young 05106
    Platform
    • Bell M. Shimada (SH)
    Operation
    • SH1904_EK60-ek5
    Last Modified: 2023-01-19
    For questions about the information on this page, please email:ncei.info@noaa.gov