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    • ME70 Water Column Sonar Data Collected During SH1005

    Metadata Updated: June 9, 2023

    Shimada Seamount Mapping. The ME70 survey was conducted with repeated coverage of the shallow part of the seamount, operating the ME70 in two configurations. One configuration was optimized for water-column and seabed mapping to a range of about 300 m, and the other for seabed mapping to a range of 500 m.

    Initially, the ship followed the 500-m contour around the bank to define its spatial extent. Survey waypoints were revised to match the extent, and the ship then followed the parallel survey lines over the top of the bank.

    The ME70 and EK60s were operated and recorded to ranges of 1000 m. The operational and recorded range for the initial transit around the seamount o enable seabed detections to 500 m for ME70 beams steered near 45 deg. angles from vertical.

    Triggering was synchronous, with the ME70 trigger set as master controlling the EK60 trigger and the delay set to 0-ms.

    ME70 was operated at high power. Motion compensation for the ME70 was active with motion data supplied from an Applanix POSMV model MV V4, via serial port. Position data to the ME70 and EK60 were from a MX Marine MX 420 Navigation System GPS with differential correction. Data were recorded in Simrad raw format (.raw files) for the ME70 and EK60.

    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 10, 2022
    Metadata Updated Date June 9, 2023
    Reference Date(s) May 21, 2010 (creation), April 19, 2018 (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 10, 2022
    Metadata Updated Date June 9, 2023
    Reference Date(s) May 21, 2010 (creation), April 19, 2018 (publication)
    Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
    Contact Email
    Guid gov.noaa.ncei.wcd:SH1005_ME70
    Access Constraints Cite as: NOAA Southwest Fisheries Science Center. 2010. 'ME70 Water Column Sonar Data Collected During SH1005'. NOAA National Centers for Environmental Information. https://doi.org/10.25921/waqm-xt76 [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 -86.42882
    Bbox North Lat 32.71872
    Bbox South Lat 7.83149
    Bbox West Long -117.51949
    Coupled Resource
    Frequency Of Update notPlanned
    Harvest Object Id e09b9055-fdc8-465a-9845-3ca841f844b4
    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.
    Lineage Unknown
    Metadata Language eng; USA
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-117.51949, 7.83149], [-86.42882, 7.83149], [-86.42882, 32.71872], [-117.51949, 32.71872], [-117.51949, 7.83149]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System urn:ogc:def:crs:EPSG::4326
    Spatial Harvester True
    Temporal Extent Begin 2010-05-21T02:43:39
    Temporal Extent End 2010-05-31T00:22:52

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