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    On the Optimal Spatial Resolution of Crustal Mass Distributions for Forward Gravity Field Modelling

    Access Status
    Fulltext not available
    Authors
    Kuhn, Michael
    Featherstone, Will
    Date
    2003
    Type
    Conference Paper
    
    Metadata
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    Citation
    Kuhn, Michael and Featherstone, Will. 2003. On the Optimal Spatial Resolution of Crustal Mass Distributions for Forward Gravity Field Modelling, in I N Tziavos (ed), 3rd Meeting of the International Gravity and Geoid Commission, Aug 1 2002, pp. 195-200. Thessaloniki, Greece: Ziti Editions.
    Source Title
    Gravity and Geoid 2002
    Source Conference
    3rd Meeting of the International Gravity and Geoid Commission
    School
    Department of Spatial Sciences
    URI
    http://hdl.handle.net/20.500.11937/12155
    Collection
    • Curtin Research Publications
    Abstract

    The primary drawback of forward gravity field modelling is that the Earth's density distribution must be known. Nowadays, increasingly more information on the Earth?s mass distribution is available, such as high-resolution digital elevation models, models of the crustal mass distribution as well as of deeper masses. This paper studies the spatial resolution of crustal mass distributions required in forward gravity field modelling using spherical harmonic expansion of global data and power spectral density functions of local data. The spectral sensitivity of different gravity field parameter is examined by means of degree variances and analytical degree variances. Numerical results for the geoid height and gravity disturbance are given globally and in a test area over part of Australia.

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