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  • Airborne geophysical survey: Ketchikan

    Metadata Updated: November 12, 2020

    Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field intensity values and location. In surveys such as this one where the data were originally collected in digital form and not digitized from contour maps, the information we provide typically includes latitude, longitude, magnetic anomaly in nanoTeslas, and intermediate values used to derive the magnetic anomaly such as total magnetic field.

    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.

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    Dates

    Metadata Date December 5, 2014
    Metadata Created Date November 12, 2020
    Metadata Updated Date November 12, 2020
    Reference Date(s) January 1, 2014 (publication)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from DOI Open Data

    Graphic Preview

    Reduced-size image depicting the data, 1104 x 868 pixels, 124,668 bytes

    Additional Metadata

    Resource Type Dataset
    Metadata Date December 5, 2014
    Metadata Created Date November 12, 2020
    Metadata Updated Date November 12, 2020
    Reference Date(s) January 1, 2014 (publication)
    Responsible Party U.S. Geological Survey, Mineral Resources Program (Point of Contact)
    Contact Email
    Guid
    Access Constraints Use Constraints: none, Access Constraints: none
    Bbox East Long -129.97862243652
    Bbox North Lat 55.986179351807
    Bbox South Lat 54.686779022217
    Bbox West Long -132.3165435791
    Coupled Resource
    Frequency Of Update notPlanned
    Graphic Preview Description Reduced-size image depicting the data, 1104 x 868 pixels, 124,668 bytes
    Graphic Preview File http://mrdata.usgs.gov/geophysics/surveys/geophysics2/AK/AK_3092.jpg
    Graphic Preview Type JPEG
    Licence Reference herein to any specific commercial product, process, or service by trade name,trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.
    Metadata Language
    Metadata Type geospatial
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 1976-05-01
    Temporal Extent End 1976-07-01

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