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EK500 Water Column Sonar Data Collected During DE0710

Metadata Updated: September 17, 2021

NEFSC 2007 Atlantic Herring Acoustic/Midwater Trawl Survey (DE0710, 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.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Date September 14, 2021
Metadata Created Date November 12, 2020
Metadata Updated Date September 17, 2021
Reference Date(s) September 6, 2007 (creation), June 1, 2015 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from NGDC MGG Sonar Water Column

Additional Metadata

Resource Type Series
Metadata Date September 14, 2021
Metadata Created Date November 12, 2020
Metadata Updated Date September 17, 2021
Reference Date(s) September 6, 2007 (creation), June 1, 2015 (publication)
Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
Contact Email
Guid gov.noaa.ngdc.mgg.wcd:DE0710_EK500
Access Constraints Cite as: Northeast Fisheries Science Center. 2007. 'EK500 Water Column Sonar Data Collected During DE0710'. NOAA National Centers for Environmental Information. doi:10.7289/V59021RX [access date], 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., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose., Resource may not be available for up to one year after initial collection.
Bbox East Long -66.0069973934164
Bbox North Lat 43.1200001723056
Bbox South Lat 41.0124001401929
Bbox West Long -70.5086022419099
Coupled Resource
Frequency Of Update notPlanned
Harvest Object Id 2ac9043b-3564-4d2f-89d3-6ced7a232520
Harvest Source Id ab8b0290-e4db-4a00-89f2-4e427c2054b2
Harvest Source Title NGDC MGG Sonar Water Column
Licence 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.
Metadata Language eng; USA
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-70.5086022419, 41.0124001402], [-66.0069973934, 41.0124001402], [-66.0069973934, 43.1200001723], [-70.5086022419, 43.1200001723], [-70.5086022419, 41.0124001402]]]}
Progress completed
Spatial Data Service Type
Spatial Reference System urn:ogc:def:crs:EPSG::4326
Spatial Harvester True
Temporal Extent Begin 2007-09-06T13:46:24
Temporal Extent End 2007-10-26T23:59:58

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