NEFSC 2008 Atlantic Herring Acoustic/Midwater Trawl Survey (DE0809, EK500)
The NEFSC Atlantic herring acoustic survey is a fisheries independent survey that
provides scientific data for Atlantic herring assessments in the U.S. mid-Atlantic
and New England regions. The survey is conducted in the fall on pre-spawning and spawning
herring primarily in the Georges Bank region, but with other historical sites in the
Gulf of Maine surveyed. The survey is a systematic design with parallel transects
oriented perpendicular to bathymetric features. Midwater trawl sites are selected
on an ad hoc basis to sample acoustic backscatter attributed to Atlantic herring as
well as backscatter by other organisms. 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.
- Cite as: Northeast Fisheries Science Center (2008): Water Column Sonar Data Collection (DE0809, EK500). National Centers for Environmental Information, NOAA. doi:10.7289/V55B00DG [access date]
- DE0809_EK500
- doi:10.7289/V55B00DG
gov.noaa.ngdc.mgg.wcd:DE0809_EK500
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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 |
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 | 2008-09-04T00:00:00 to 2008-10-10T23:59:59 |
Spatial Reference System | urn:ogc:def:crs:EPSG:4326 |
Spatial Bounding Box Coordinates |
West:-70.3917019085173
East:-66.0469974908919
South:40.5995003791958
North:43.1720005066754
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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 NEFSC Atlantic herring acoustic survey provides fisheries independent abundance and biological data for the U.S. Atlantic herring assessment. |
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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