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    Performance of three types of Stokes's kernel in the combined solution for the geoid

    Access Status
    Fulltext not available
    Authors
    Vanicek, P.
    Featherstone, Will
    Date
    1998
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Vanicek, P. and Featherstone, W.E. 1998. Performance of three types of Stokes's kernel in the combined solution for the geoid. Journal of Geodesy 72 (12): 684-697.
    Source Title
    Journal of Geodesy
    DOI
    10.1007/s001900050209
    Faculty
    Division of Resources and Environment
    Department of Spatial Sciences
    Remarks

    Originally published in Journal of Geodesy 1998 72(12) pp.684-697

    Copyright Springer-Verlag

    The original article is available at springerlink.com.

    URI
    http://hdl.handle.net/20.500.11937/28888
    Collection
    • Curtin Research Publications
    Abstract

    When regional gravity data are used to compute a gravimetric geoid in conjunction with a geopotential model, it is sometimes implied that the terrestrial gravity data correct any erroneous wavelengths present in the geopotential model. This assertion is investigated. The propagation of errors from the low-frequency terrestrial gravity field into the geoid is derived for the spherical Stokes integral, the spheroidal Stokes integral and the Molodensky-modified spheroidal Stokes integral. It is shown that error-free terrestrial gravity data, if used in a spherical cap of limited extent, cannot completely correct the geopotential model. Using a standard norm, it is shown that the spheroidal and Molodensky-modified integration kernels offer a preferable approach. This is because they can filter out a large amount of the low-frequency errors expected to exist in terrestrial gravity anomalies and thus rely more on the low-frequency geopotential model, which currently offers the best source of this information.

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