NEFSC Apex Predators Longline Survey (DE0407, EK500)
The fishery independent survey of Atlantic large and small coastal sharks is conducted bi-annually in U.S. waters. Its primary objective is to conduct a standardized, systematic survey of the shark populations off the U.S. Atlantic coast to provide unbiased indices of relative abundance for species inhabiting the waters from Florida to the Mid-Atlantic. This survey also provides an opportunity to tag sharks with conventional and electronic tags as part of the NEFSC Cooperative Shark Tagging Program, inject with OTC for age validation studies, and to collect biological samples and data used in analyses of life history characteristics (age, growth, reproductive biology, trophic ecology, etc.) and other research of sharks in U.S. coastal waters including the collection of morphometric data for size conversions. The time series of abundance indices from this survey is critical to the evaluation of coastal Atlantic shark species.
- Cite as: Northeast Fisheries Science Center (2004): Water Column Sonar Data Collection (DE0407, EK500). National Centers for Environmental Information, NOAA. doi:10.7289/V5WS8R7C [access date]
gov.noaa.ngdc.mgg.wcd:DE0407_EK500
Search Data |
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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.
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Ordering Instructions |
Contact the Water Column Sonar Data Manager to order data |
Distributor |
Water Column Sonar Data Manager NOAA National Centers for Environmental Information (303) 497-4742 wcd.info@noaa.gov
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Dataset Principal Investigator |
Lisa Natanson Fisheries Biologist NEFSC 401-782-3320 lisa.natanson@noaa.gov
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Time Period |
2004-04-27T00:00:00 to 2004-05-14T18:56:12 |
Spatial Reference System |
urn:ogc:def:crs:EPSG:4326 |
Spatial Bounding Box Coordinates |
West: -80.2520228290591
East: -78.0764656867184
South: 29.4174678957627
North: 32.4932857212352
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Spatial Coverage Map |
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Documentation links not available. |
Publication Dates |
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Dataset Progress Status |
Complete - production of the data has been completed |
Data Update Frequency |
Not planned |
Purpose |
The primary objective is to conduct a standardized, systematic survey of the shark populations off the U.S. Atlantic coast to provide unbiased indices of relative abundance for species inhabiting the waters from Florida to the Mid-Atlantic. |
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.
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Dataset Citation |
- Cite as: Northeast Fisheries Science Center (2004): Water Column Sonar Data Collection (DE0407, EK500). National Centers for Environmental Information, NOAA. doi:10.7289/V5WS8R7C [access date]
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Custodians |
- NOAA National Centers for Environmental Information
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Resource Providers |
- DOC/NOAA/NMFS/NEFSC > Northeast Fisheries Science Center
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Points of Contact |
- DOC/NOAA/NMFS/NEFSC > Northeast Fisheries Science Center
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Publishers |
- NOAA National Centers for Environmental Information
- NOAA National Centers for Environmental Information
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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
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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
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Instrument keywords |
Global Change Master Directory (GCMD) Instrument Keywords- In Situ/Laboratory Instruments > Profilers/Sounders > Acoustic Sounders > WCMS > Water Column Mapping System
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Place keywords |
International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)
Global Change Master Directory (GCMD) Location Keywords
- GEOGRAPHIC REGION > GLOBAL
- Vertical Location > VERTICAL LOCATION > SEA FLOOR
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Use Constraints |
- Cite as: Northeast Fisheries Science Center (2004): Water Column Sonar Data Collection (DE0407, EK500). National Centers for Environmental Information, NOAA. doi:10.7289/V5WS8R7C [access date]
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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.
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Fees |
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Lineage information for: series |
Processor |
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Lineage information for: series |
Lineage Statement |
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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.
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Acquisition Information (collection) |
Instrument |
- Simrad EK500
- Simrad ME70
- Simrad EK60
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Platform |
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Operation |
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Last Modified: 2017-05-30
For questions about the information on this page, please email:
wcd.info@noaa.gov