NEFSC Small Pelagics Acoustic/Midwater Trawl Survey (DE9903, EK500)

The small pelagics cruise will map the distribution of small pelagic species such as Atlantic mackerel, Atlantic herring, silver hake, butterfish, and squid, in the mid-Atlantic and Gulf of Maine regions of the northeast US. Acoustic data are the primary data and midwater trawl sites are selected on an ad hoc basis to sample acoustic backscatter attributed to small pelagic species. The primary gear is multifrequency Simrad echosounders, but midwater trawl, CTD, and a host of other scientific sensor data are collected ancillary to the acoustic data.
  • Cite as: Northeast Fisheries Science Center (1999): Water Column Sonar Data Collection (DE9903, EK500). National Centers for Environmental Information, NOAA. doi:10.7289/V5FN146D [access date]
gov.noaa.ngdc.mgg.wcd:DE9903_EK500
Search Data
Distribution Formats
  • Simrad EK500 data logged with BI500 system (Version: 1)
    • File Specification: Older Simrad EK500 data logged with the BI500 software. Data in multiple files with -Data, -Ping, -Info, -Vlog, -Snap, or -Work at the end of file name.
Ordering Instructions Contact the NCEI Water Column Sonar Data Manager to order data
Distributor Distributor information not available
Dataset Principal Investigator Michael Jech
Research Fish Biologist
DOC/NOAA/NMFS/NEFSC> Northeast Fisheries Science Center
508-495-2353
michael.jech@noaa.gov
Time Period 1970-02-23T19:14:02 to 1970-03-10T22:40:20
Spatial Bounding Box Coordinates
N: 43.29244
S: 42.37203
E: -69.48746
W: -70.73381
Spatial Coverage Map
Documentation links not available.
Publication Dates
  • creation: 1970-02-23
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency Not planned
Purpose Acoustically map the distribution of pelagic fish such as Atlantic mackerel, Atlantic herring, silver hake, butterfish, and squid.
Dataset Citation
  • Cite as: Northeast Fisheries Science Center (1999): Water Column Sonar Data Collection (DE9903, EK500). National Centers for Environmental Information, NOAA. doi:10.7289/V5FN146D [access date]
Custodians
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Resource Providers

  • DOC/NOAA/NMFS/NEFSC > Northeast Fisheries Science Center
Points of Contact

  • DOC/NOAA/NMFS/NEFSC > Northeast Fisheries Science Center
Publishers
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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
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)
  • North Atlantic Ocean
Global Change Master Directory (GCMD) Location Keywords
  • GEOGRAPHIC REGION > GLOBAL
  • Vertical Location > VERTICAL LOCATION > SEA FLOOR
Keywords
    Use Constraints
    • Cite as: Northeast Fisheries Science Center (1999): Water Column Sonar Data Collection (DE9903, EK500). National Centers for Environmental Information, NOAA. doi:10.7289/V5FN146D [access date]
    Access Constraints
    • Resource may not be available for up to one year after initial collection.
    Fees
    • Free
    Lineage information for: collectionHardware
    Lineage Statement Uncalibrated
    Lineage information for: series
    Processor
    • DOC/NOAA/NMFS/NEFSC> Northeast Fisheries Science Center
    Lineage information for: series
    Lineage Statement The data files contain the echogram "Q" and single target detections "E" telegrams for 18 (T1), 38 (T2), and 120 (T3) kHz data. The sample angle "B", power "W", volume backscatter "V", and TS "P" data for the 38 kHz were collected, and are available upon request from the NEFSC.
    Acquisition Information (collection)
    Instrument
    • Simrad EK500
    Platform
    • Delaware II (DE)
    Operation
    • DE9903_leg01
    Last Modified: 2017-05-30
    For questions about the information on this page, please email: wcd.info@noaa.gov