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    On the Use of the Geoid in Geophysics: A Case Study over the North-west Shelf of Australia

    146638_24800_aseg97a.pdf (64.72Kb)
    Access Status
    Open access
    Authors
    Featherstone, Will
    Date
    1997
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Featherstone, Will. 1997. On the Use of the Geoid in Geophysics: A Case Study over the North-west Shelf of Australia. Exploration Geophysics 28 (1): pp. 52-57.
    Source Title
    Exploration Geophysics
    DOI
    10.1071/EG997052
    ISSN
    08123985
    Faculty
    Department of Exploration Geophysics
    Faculty of Science and Engineering
    WA School of Mines
    School
    Department of Spatial Sciences
    URI
    http://hdl.handle.net/20.500.11937/42011
    Collection
    • Curtin Research Publications
    Abstract

    The geoid is the fundamental surface that defines the figure of the Earth. It is approximated by mean sea-level and undulates due to spatial variations in the Earth's gravity field. The use of the geoid in regional geophysics is illustrated for the North-West Shelf of Australia by removing long-wavelength geoid features, due predominantly to deep-Earth mass anomalies, in order to reveal near-surface structure. After this process, the residual geoid anomalies correlate well with known geological structures. Therefore, the geoid can provide information, complementary to other geophysical data, of the Earth's internal structure.

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