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    • EK60 Water Column Sonar Data Collected During HB0806

    Metadata Updated: September 17, 2021

    Habitat Mapping Cruise - Tunicates (HB0806, EK60). Objectives: Use otter trawls (if available), beam trawls (if not), Naturalist Dredge, SEABOSS photography/bottom grab equipment, CTDs, and large (10-30 liter) Niskin water bottles and ship’s ADCP to conduct the following operations: 1) determine changes in distribution and condition of invasive colonial tunicate Didemnum vexillum on northern Georges Bank gravel habitat, and also northeast of Great South Channel; 2) document the influence other ecosystem components, substrates, hydrology, and disturbances, including fishing disturbances on tunicate-benthic/demersal stock interactions; 3) collect tunicate specimens for further study including DNA analysis, and collect near-bottom water samples in tunicate areas; 4) explore the function of a newly-discovered benthic/demersal community not influenced by trawling or tunicate colonization, 5) continue monitoring recovery and productivity of untrawled gravel habitats in HAPC on northeastern Georges Bank, as compared to nearby trawled habitats; also, time permitting, and 6) re-occupy existing stations and sample new stations on a transect from the northeast corner of NLCA to outside the eastern boundary of NLCA.

    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 September 14, 2021
    Metadata Created Date November 12, 2020
    Metadata Updated Date September 17, 2021
    Reference Date(s) August 8, 2008 (creation), February 1, 2015 (publication)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from NGDC MGG Sonar Water Column

    Other Data Resources

    Additional Metadata

    Resource Type Series
    Metadata Date September 14, 2021
    Metadata Created Date November 12, 2020
    Metadata Updated Date September 17, 2021
    Reference Date(s) August 8, 2008 (creation), February 1, 2015 (publication)
    Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
    Contact Email
    Guid gov.noaa.ngdc.mgg.wcd:HB0806_EK60
    Access Constraints Cite as: NOAA Northeast Fisheries Science Center. 2008. 'EK60 Water Column Sonar Data Collected During HB0806'. NOAA National Centers for Environmental Information. https://doi.org/10.7289/V52Z13G8 [access date], Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose., Resource may not be available for up to one year after initial collection.
    Bbox East Long -67.1413664333
    Bbox North Lat 42.131197327
    Bbox South Lat 39.27613
    Bbox West Long -72.4870258746
    Coupled Resource
    Frequency Of Update notPlanned
    Harvest Object Id a063f77e-0330-4ac0-bd03-0ff8d56cba17
    Harvest Source Id ab8b0290-e4db-4a00-89f2-4e427c2054b2
    Harvest Source Title NGDC MGG Sonar Water Column
    Licence These data are considered raw and have not been subjected to the NOAA's quality control or quality assurance procedures. They are released for limited public use as preliminary data to be used only with appropriate caution. NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty., Not subject to copyright protection within the United States.
    Metadata Language eng; USA
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-72.4870258746, 39.27613], [-67.1413664333, 39.27613], [-67.1413664333, 42.131197327], [-72.4870258746, 42.131197327], [-72.4870258746, 39.27613]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System urn:ogc:def:crs:EPSG::4326
    Spatial Harvester True
    Temporal Extent Begin 2008-08-08T22:14:23
    Temporal Extent End 2008-08-25T13:36:11

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