NEFSC Apex Predator Longline Survey (DE0005, 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 (2000): Water Column Sonar Data Collection (DE0005, EK500). National Centers for Environmental Information, NOAA. doi:10.7289/V5TX3CCG [access date]
- DE0005_EK500
- doi:10.7289/V5TX3CCG
gov.noaa.ngdc.mgg.wcd:DE0005_EK500
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Ordering Instructions | Contact the NCEI 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 |
Dataset Principal Investigator | Lisa Natanson Fisheries Biologist NEFSC 401-782-3320 lisa.natanson@noaa.gov |
Time Period | 2000-03-15T15:11:11 to 2000-06-08T10:30:22 |
Spatial Reference System | urn:ogc:def:crs:EPSG:4326 |
Spatial Bounding Box Coordinates |
West:-76.06597
East:-65.81185
South:35.38771
North:44.41665
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Documentation links not available. |
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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. |
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Theme keywords | Global Change Master Directory (GCMD) Science Keywords
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Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
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Instrument keywords | Global Change Master Directory (GCMD) Instrument Keywords
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Place keywords | International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas"
publication S-23)
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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. |
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Last Modified: 2017-05-30
For questions about the information on this page, please email:wcd.info@noaa.gov