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  • Cooperative Research Twin Trawl Sweep Comparison Study

    Metadata Updated: September 22, 2023

    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.

    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 August 15, 2023
    Metadata Created Date November 12, 2020
    Metadata Updated Date September 22, 2023
    Reference Date(s) (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NMFS NEFSC

    Additional Metadata

    Resource Type Dataset
    Metadata Date August 15, 2023
    Metadata Created Date November 12, 2020
    Metadata Updated Date September 22, 2023
    Reference Date(s) (publication)
    Responsible Party (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:27385
    Access Constraints Cite As: Northeast Fisheries Science Center, [Date of Access]: Cooperative Research Twin Trawl Sweep Comparison Study [Data Date Range], https://www.fisheries.noaa.gov/inport/item/27385., Access Constraints: User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy. | Use Constraints: Acknowledgement of NOAA/NMFS/NEFSC, as the source from which these data were obtained in any publications and/or other representations of these, data is suggested.
    Bbox East Long -66.7082
    Bbox North Lat 43.465033
    Bbox South Lat 39.976988
    Bbox West Long -71.782887
    Coupled Resource
    Frequency Of Update asNeeded
    Harvest Object Id ca3fba2e-652f-43c2-a450-56d8ae3409c5
    Harvest Source Id 523189fa-8edc-48e1-9ec5-f571e7dd923c
    Harvest Source Title NMFS NEFSC
    Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
    Lineage Vessel sensor data were collected electronically using SCS. Catch and biological data were collected electronically using FSCS 1.6. At the completion of the cruise, a database copy was inserted into the shoreside database.
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-71.782887, 39.976988], [-66.7082, 39.976988], [-66.7082, 43.465033], [-71.782887, 43.465033], [-71.782887, 39.976988]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2008
    Temporal Extent End 2009

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