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    • Marine Trackline Geophysical Database for Sub-Bottom Seismic Data

    Metadata Updated: October 31, 2024

    Marine Trackline Geophysical data represented by sub-bottom seismic data, which we sometimes also call chirp (based on its operating mode), uses a 3.5 kHz operating frequency. Research vessels use this technology to produce cross sections or vertical slices of the upper tens to hundreds of meters of the sediments below the seafloor.

    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 July 26, 2024
    Metadata Created Date October 31, 2024
    Metadata Updated Date October 31, 2024
    Reference Date(s) 1979 (creation), 2023 (revision), September 15, 2023 (publication)
    Frequency Of Update irregular

    Metadata Source

    Harvested from NGDC Collection

    Other Data Resources

    Graphic Preview

    Map showing a web mercator projection of the trackline web map data discovery portal.

    Additional Metadata

    Resource Type Dataset
    Metadata Date July 26, 2024
    Metadata Created Date October 31, 2024
    Metadata Updated Date October 31, 2024
    Reference Date(s) 1979 (creation), 2023 (revision), September 15, 2023 (publication)
    Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
    Contact Email
    Guid gov.noaa.ncei:trackline-sub-bottom
    Access Constraints 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., Cite as: NOAA National Centers for Environmental Information. 1979: Marine Trackline Geophysical Database for Sub-Bottom Seismic Data. NOAA National Centers for Environmental Information. https://doi.org/doi:10.7289/V5CZ35DR. Accessed [date].
    Bbox East Long 180.00
    Bbox North Lat 90.00
    Bbox South Lat -90.00
    Bbox West Long -180.00
    Coupled Resource
    Frequency Of Update irregular
    Graphic Preview Description Map showing a web mercator projection of the trackline web map data discovery portal.
    Graphic Preview File https://ngdc.noaa.gov/mgg/image/trkmap256x235.gif
    Graphic Preview Type gif
    Harvest Object Id f88116cf-662b-4c7e-93dd-ed0e9f859661
    Harvest Source Id 5088829e-ee94-4daf-8d22-e38f5358f506
    Harvest Source Title NGDC Collection
    Licence Not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For navigation, please refer to the NOS nautical chart series.
    Lineage
    Metadata Language
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-180.0, -90.0], [180.0, -90.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, -90.0]]]}
    Progress completed
    Spatial Data Service Type ArcGIS Map Service
    Spatial Reference System Through the collection reference systems have vaired with time and location. Please see survey level metadata for detailed information.
    Spatial Harvester True
    Temporal Extent Begin 1967-01-01

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