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    • Acoustics Research

    Metadata Updated: March 8, 2024

    Fisheries acoustics data are collected from more than 200 sea-days each year aboard the FRV DELAWARE II and FRV ALBATROSS IV (decommissioned) and the FSV Henry B. Bigelow during pelagic, bottom-trawl, and marine mammal surveys. Acoustic sampling operations include continuous measurements using hull-mounted transducers and multi-frequency scientific echosounders. Biological sampling with midwater and bottom trawls, and underwater video deployments is conducted to verify species-specific backscatter and characterize sea-floor habitat. In-situ and laboratory experiments aid in understanding species-specific acoustic measurements. We are continuously developing, testing, and evaluating advanced sampling technologies during laboratory and field experiments to improve abundance estimates and map spatial and temporal distributions of fish and invertebrates. Acoustic, optic, and biological data are audited and archived in the NEFSC relational data management system.

    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 February 29, 2024
    Metadata Created Date November 12, 2020
    Metadata Updated Date March 8, 2024
    Reference Date(s) (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NMFS NEFSC

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date February 29, 2024
    Metadata Created Date November 12, 2020
    Metadata Updated Date March 8, 2024
    Reference Date(s) (publication)
    Responsible Party (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:26654
    Access Constraints Cite As: Northeast Fisheries Science Center, [Date of Access]: Acoustics Research [Data Date Range], https://www.fisheries.noaa.gov/inport/item/26654., Access Constraints: There may be constraints due to the timing between the time the data is archived and when it becomes available, Use Constraints: All the data have doi numbers. It is highly recommended that any use of the data includes citation of the doi.
    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 bc2f1490-2f28-4a33-9739-c868544666dc
    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 There exist event log files for source data; a step by step users manual which includes parameter settings on instruments and calibration steps; publications describe how data are post-processed and the perl code which is used in post-processing.
    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 1998-08-26

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