Cooperative Research Twin Trawl Sweep Comparison Study
The "Twin-Trawl Sweep Efficiency Study" was intended to compare the sweep efficiency and selectivity of the NEFSC standardized bottom trawl to that of a standardized trawl that differed only in sweep configuration. The experimental trawl was equipped with a small cookie sweep while the standardized trawl has a larger rock-hopper sweep. This work was done on a commercial twin-trawler that was capable of towing both nets side-by-side simultaneously. This work was undertaken in Southern New England waters in depths (30-50 meters) assumed to have high flounder and skate densities. Ninety two valid paired tows were accomplished. Efficiency and size selectivity for the two configurations were compared.
Resources
4 resources available
-
27385_CooperativeResearchTwinTrawlSweepComparisonStudy.zip
ZIP -
ftp://ftp.nefsc.noaa.gov/pub/dropoff/PARR/PEMAD/ESB/SVDBS
TEXT/HTML -
GCMD Keyword Forum Page
TEXT/HTML -
Full Metadata Record
TEXT/HTML
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{ "fn": "Foley, Catherine", "@type": "vcard:Contact", "hasEmail": "mailto:catherine.foley@noaa.gov" } |
| describedByType | application/octet-steam |
| description | The "Twin-Trawl Sweep Efficiency Study" was intended to compare the sweep efficiency and selectivity of the NEFSC standardized bottom trawl to that of a standardized trawl that differed only in sweep configuration. The experimental trawl was equipped with a small cookie sweep while the standardized trawl has a larger rock-hopper sweep. This work was done on a commercial twin-trawler that was capable of towing both nets side-by-side simultaneously. This work was undertaken in Southern New England waters in depths (30-50 meters) assumed to have high flounder and skate densities. Ninety two valid paired tows were accomplished. Efficiency and size selectivity for the two configurations were compared. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "27385_CooperativeResearchTwinTrawlSweepComparisonStudy.zip", "format": "ZIP", "mediaType": "application/zip", "description": "The compressed file contains the following comma delimited files: 27385_UNION_FSCS_SVCAT.csv 27385_UNION_FSCS_SVLEN.csv 27385_UNION_FSCS_SVSTA.csv", "downloadURL": "https://storage.googleapis.com/nmfs_odp_nefsc/PARR/PEMAD/ESB/27385/27385_CooperativeResearchTwinTrawlSweepComparisonStudy.zip", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "ftp://ftp.nefsc.noaa.gov/pub/dropoff/PARR/PEMAD/ESB/SVDBS", "accessURL": "ftp://ftp.nefsc.noaa.gov/pub/dropoff/PARR/PEMAD/ESB/SVDBS", "mediaType": "text/html", "description": "Compressed Zipped Folder contains Support Table Entities for this data set SVDBS_SupportTables.zip contains Entities - SVDBS_CLOUD.csv - SVDBS_MATURITY_CODES.csv - SVDBS_SEX_CODES.csv - SVDBS_SVGEAR.csv - SVDBS_SVMSTRATA.csv - SVDBS_SVVESSEL.csv - SVDBS_WEATHER.csv - SVDBS_XBT.csv Data extracted on 8/8/2017", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "GCMD Keyword Forum Page", "accessURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords", "mediaType": "text/html", "description": "Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "Full Metadata Record", "accessURL": "https://www.fisheries.noaa.gov/inport/item/27385", "mediaType": "text/html", "description": "View the complete metadata record on InPort for more information about this dataset.", "describedByType": "application/octet-stream" } ] |
| identifier | https://data.noaa.gov/waf/NOAA/nmfs/nefsc/iso/xml/27385.xml |
| keyword |
[ "cookie sweep", "cooperative research", "rock hopper sweep", "size selectivity", "sweep efficiency", "twin trawl", "2008", "2009", "Northwest Atlantic", "Southern New England", "benthic", "demersal", "pelagic", "DOC/NOAA/NMFS/NEFSC > Northeast Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce", "Cooperative Research Surveys" ] |
| landingPage | https://www.fisheries.noaa.gov/inport/item/27385 |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2026-04-30T00:00:00.000+00:00 |
| publisher |
{ "name": "Northeast Fisheries Science Center", "@type": "org:Organization" } |
| rights | otherRestrictions, unclassified |
| spatial | -66.7082,39.976988,-71.782887,43.465033 |
| temporal | 2008-01-01T00:00:00+00:00/2009-01-01T00:00:00+00:00 |
| title | Cooperative Research Twin Trawl Sweep Comparison Study |
