NEFSC 2002 Surfclam and Ocean Quahog Survey (DE0206, EK500)

The 2002 region-wide survey for Atlantic surfclam (Spisula solidissima) and Ocean Quahog (Arctica islandica) was conducted in continental shelf waters, from Delmarva Peninsula to Georges Bank aboard the FRV DELAWARE II. The survey, conducted by the NMFS Northeast Fisheries Science Center, provides indices of abundance and recruitment for both species. In addition, tows were made at 25 non-random sites during the survey to support on-going scientific studies.
  • Cite as: Northeast Fisheries Science Center (2002): Water Column Sonar Data Collection (DE0206, EK500). National Centers for Environmental Information, NOAA. doi:10.7289/V5FQ9TKB [access date]
gov.noaa.ngdc.mgg.wcd:DE0206_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 Chuck Anderson
Water Column Sonar Data Manager
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
(303) 497-4742
wcd.info@noaa.gov
Dataset Principal Investigator Victor Nordahl
Fisheries Biologist
NEFSC
508-495-2334
vic.nordahl@noaa.gov
Time Period 2002-07-15T14:35:32 to 2002-07-23T23:59:59
Spatial Reference System urn:ogc:def:crs:EPSG:4326
Spatial Bounding Box Coordinates
N: 41.3154403849263
S: 39.5088500857849
E: -67.0279288960239
W: -70.4058607744254
Spatial Coverage Map
Documentation links not available.
Publication Dates
  • creation: 2002-07-15
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency Not planned
Purpose The NEFSC surfclam and ocean quahog survey collects data for the surfclam and ocean quahog assessment.
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: Northeast Fisheries Science Center (2002): Water Column Sonar Data Collection (DE0206, EK500). National Centers for Environmental Information, NOAA. doi:10.7289/V5FQ9TKB [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 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)
  • North Atlantic Ocean
Global Change Master Directory (GCMD) Location Keywords
  • GEOGRAPHIC REGION > GLOBAL
  • Vertical Location > VERTICAL LOCATION > SEA FLOOR
Use Constraints
  • Cite as: Northeast Fisheries Science Center (2002): Water Column Sonar Data Collection (DE0206, EK500). National Centers for Environmental Information, NOAA. doi:10.7289/V5FQ9TKB [access date]
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
  • NEFSC
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.
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Acquisition Information (collection)
Instrument
  • Simrad EK500
  • Simrad ME70
  • Simrad EK60
Platform
  • Delaware II (DE)
Operation
  • DE0206_EK500
Last Modified: 2017-05-30
For questions about the information on this page, please email: wcd.info@noaa.gov