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    • ANWR and Alaska Peninsula Gravity Data

    Metadata Updated: October 18, 2024

    The gravity station data (1252 records) were compiled by the U.S. Geological Survey and the State of Alaska Division of Geological & Geophysical Surveys. This data base was received in August, 1984. Principal gravity parameters include Free-air Anomalies and Simple Bouguer Anomalies (no terrain correction applied) for the Alaska Peninsula. The observed gravity values are referenced to the International Gravity Standardization Net 1971 (IGSN 71). The gravity anomaly computation uses the Geodetic Reference System 1967 (GRS 67) theoretical gravity formula. The data are randomly distributed within the boundaries of northeast Alaska including the Arctic National Wildlife Range (ANWR) and the Alaska Peninsula. Note that the original USGS Open File Report by D. F. Barnes mentions the use of the 1931 International Ellipsoid for gravity reduction but this is believed to have subsequently been changed to the GRS 67 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 September 25, 2017
    Metadata Created Date October 18, 2024
    Metadata Updated Date October 18, 2024
    Reference Date(s) January 1, 1999 (publication)
    Frequency Of Update irregular

    Metadata Source

    Harvested from NGDC MGG Geophysics

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date September 25, 2017
    Metadata Created Date October 18, 2024
    Metadata Updated Date October 18, 2024
    Reference Date(s) January 1, 1999 (publication)
    Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
    Contact Email
    Guid gov.noaa.ngdc.mgg.geophysics:G01457
    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 Constraints: If you use this data, please cite the National Geophysical Data Center and the originator of the data., Access Constraints: None
    Bbox East Long -141.056
    Bbox North Lat 70.2333
    Bbox South Lat 54.6333
    Bbox West Long -163.902
    Coupled Resource
    Frequency Of Update irregular
    Harvest Object Id 5468d61b-f523-421a-b219-fa093de88b4c
    Harvest Source Id 80dfcf5d-5e08-457e-83e4-cfc696e378bc
    Harvest Source Title NGDC MGG Geophysics
    Licence
    Lineage
    Metadata Language eng; USA
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-163.902, 54.6333], [-141.056, 54.6333], [-141.056, 70.2333], [-163.902, 70.2333], [-163.902, 54.6333]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System urn:ogc:def:crs:EPSG::5715
    Spatial Harvester True

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