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
5 resources available
-
27385_CooperativeResearchTwinTrawlSweepComparisonStudy.zip
ZIP -
ftp://ftp.nefsc.noaa.gov/pub/dropoff/PARR/PEMAD/ESB/SVDBS
TEXT/HTML -
NOAA Data Management Plan (DMP)
PDF -
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": "NOAA Data Management Plan (DMP)",
"format": "PDF",
"mediaType": "application/pdf",
"description": "NOAA Data Management Plan for this record on InPort.",
"downloadURL": "https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/nefsc/dmp/pdf/27385.pdf",
"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 | 2026-03-04T19:17:17.000+00:00 |
| publisher |
{
"name": "Northeast Fisheries Science Center",
"@type": "org:Organization"
}
|
| references |
[
"https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/nefsc/dmp/pdf/27385.pdf"
]
|
| 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 |
