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    • Atlantic Herring Acoustic Surveys

    Metadata Updated: May 24, 2025

    The NEFSC Advanced Sampling Technologies Research Group conducts annual fisheries acoustic surveys using state-of-the-art acoustic, midwater trawling, and underwater video technologies to improve fisheries-independent stock assessments for pelagic species. Pilot and experimental studies were conducted during 1995-97 to develop the NEFSC's fisheries acoustic capabilities. Annual NEFSC Atlantic Herring Acoustic Surveys began in 1998. NEFSC acoustic capabilities include multifrequency EK60 echosounder data, Acoustic Doppler Current Profiler (ADCP), and trawl monitoring systems. Midwater trawling, plankton sampling, and underwater video operations provide biological samples and target verification. CTD (conductivity-temperature-depth) vertical profiles are also routinely obtained during survey operations.

    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.

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    Dates

    Metadata Date May 15, 2025
    Metadata Created Date October 19, 2024
    Metadata Updated Date May 24, 2025
    Reference Date(s) (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NMFS NEFSC

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date May 15, 2025
    Metadata Created Date October 19, 2024
    Metadata Updated Date May 24, 2025
    Reference Date(s) (publication)
    Responsible Party (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:9025
    Access Constraints Cite As: Northeast Fisheries Science Center, [Date of Access]: Atlantic Herring Acoustic Surveys [Data Date Range], https://www.fisheries.noaa.gov/inport/item/9025., Access Constraints: If data is stored on an internal NEFSC network, the requester may not have direct access to query the data unless they are also authorized for network access., Use 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. 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
    Bbox North Lat 44
    Bbox South Lat 38
    Bbox West Long -75
    Coupled Resource
    Frequency Of Update asNeeded
    Harvest Object Id 398bded3-41c0-414c-8908-fbffd81c4d5e
    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 are collected electronically using SCS. Station, catch and biological data were collected manually using paper logs until 2000. At the completion of each cruise leg, the logs were keypunched and data audited extensively prior to being released. Starting with year 2001, FSCS 1.0 was implemented to electronically capture station, catch and biological data. Data were subject to extensive audits prior to being released.
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-75.0, 38.0], [-66.0, 38.0], [-66.0, 44.0], [-75.0, 44.0], [-75.0, 38.0]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 1998
    Temporal Extent End 2012

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