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.
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]
Dataset Identifiers
- DE9903_EK500
- doi:10.7289/V5FN146D
ISO 19115-2 Metadata
gov.noaa.ngdc.mgg.wcd:DE9903_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 | 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 Reference System | urn:ogc:def:crs:EPSG:4326 |
Spatial Bounding Box Coordinates |
West: -70.73381
East: -69.48746
South: 42.37203
North: 43.29244
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Spatial Coverage Map |
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 | Acoustically map the distribution of pelagic fish such as Atlantic mackerel, Atlantic herring, silver hake, butterfish, and squid. |
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Global Change Master Directory (GCMD) Science Keywords
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Global Change Master Directory (GCMD) Data Center Keywords
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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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Lineage Statement | The data were collected in 1999. The year is incorrect in the filenames as well as in the data. |
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Last Modified: 2017-05-30
For questions about the information on this page, please email: wcd.info@noaa.gov
For questions about the information on this page, please email: wcd.info@noaa.gov