NEFSC 2003 Spring Bottom Trawl Survey (DE0303, EK500)

The NEFSC bottom trawl survey is a fisheries independent, multi-species survey that provides the primary scientific data for fisheries assessments in the U.S. mid-Atlantic and New England regions. Two bottom trawl surveys are conducted each year, one in the spring and one in the autumn. The survey is a standardized, stratified random design, with stratification based on bathymetry and multiple trawl sites within each stratum. Trawl sites are selected randomly, but the overall ship path is south to north. The survey covers the continental shelf and U.S. exclusive economic zone (EEZ) from Cape Hatteras, North Carolina into the Canadian EEZ. The primary gear is a bottom trawl, with CTD, multifrequency echosounder, and a host of other scientific sensor data collected ancillary to the bottom trawl catches.

The bottom trawl survey was normally conducted on the AL IV, but due to mechanical issues, the DE II was used for 2003 spring.
  • Cite as: Northeast Fisheries Science Center (2003): Water Column Sonar Data Collection (DE0303, EK500). National Centers for Environmental Information, NOAA. doi:10.7289/V5XS5SCR [access date]
gov.noaa.ngdc.mgg.wcd:DE0303_EK500
Search Data
Distribution Formats
  • Simrad EK500 data logged in .ek5 format (Version: 1)
    • File Specification: Simrad EK500 data logged with Echolog 500. These files contain EK500 data telegrams output by an EX500 on its Ethernet port. The .ek5 file contains binary Ethernet packets as output by the Simrad echosounder. The EK500 manual contains full details of the EK500 Ethernet telegram formats and should be consulted for interpreting the Ethernet packets recorded within an .ek5 file.
Ordering Instructions Contact the Water Column Sonar Data Manager to order data
Distributor Distributor information not available
Dataset No POCs available for this dataset
Time Period 2003-03-03T00:00:00 to 2003-04-27T23:59:59
Spatial Reference System urn:ogc:def:crs:EPSG:4326
Spatial Bounding Box Coordinates
N: 44.2395282863472
S: 34.4422767763909
E: -65.442583596317
W: -75.5695975377409
Spatial Coverage Map
Documentation links not available.
Publication Dates
  • creation: 2003-03-03
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency Not planned
Purpose The NEFSC bottom trawl survey provides fisheries independent abundance and biological data for fisheries assessments along the U.S. east coast.
Use Limitations
  • Not subject to copyright protection within the United States.
Dataset Citation
  • Cite as: Northeast Fisheries Science Center (2003): Water Column Sonar Data Collection (DE0303, EK500). National Centers for Environmental Information, NOAA. doi:10.7289/V5XS5SCR [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
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Theme 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
  • 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
  • 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
  • GEOGRAPHIC REGION > GLOBAL
  • Vertical Location > VERTICAL LOCATION > SEA FLOOR
Use Constraints
  • Cite as: Northeast Fisheries Science Center (2003): Water Column Sonar Data Collection (DE0303, EK500). National Centers for Environmental Information, NOAA. doi:10.7289/V5XS5SCR [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 Calibrated w/ calibration data
Lineage information for: series
Lineage information for: series
Lineage Statement
Acquisition Information (collection)
Instrument
  • Simrad EK500
Operation
  • DE0303_Leg01
Last Modified: 2017-05-30
For questions about the information on this page, please email: wcd.info@noaa.gov