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    A Gravimetric Geoid model of Tasmania, computed using the One-dimensional Fast Fourier Transform and a Deterministically Modified Kernel

    146561_24773_Tasgeoid97.pdf (84.38Kb)
    Access Status
    Open access
    Authors
    Vella, J.
    Featherstone, Will
    Date
    1999
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Vella, Jason and Featherstone, Will. 1999. A Gravimetric Geoid model of Tasmania, computed using the One-dimensional Fast Fourier Transform and a Deterministically Modified Kernel. Geomatics Research Australasia. 70: pp. 53-76.
    Source Title
    Geomatics Research Australasia
    ISSN
    13249983
    Faculty
    Department of Spatial Sciences
    Faculty of Science and Engineering
    WA School of Mines
    Remarks

    Geomantics Research Australasia has been succeeded by Journal of Spatial Science.

    URI
    http://hdl.handle.net/20.500.11937/9626
    Collection
    • Curtin Research Publications
    Abstract

    A new gravimetric estimate of the separation between the GRS80 ellipsoid and the geoid over Tasmania and surrounding seas has been made. The geoid model utilised a combination of the EGM96 global geopotential model, the 1992 release of the Australian gravity database, and a nine-second digital elevation model. The computational technique used was the one-dimensional fast Fourier transform (1D-FFT), which has been refined so as to include deterministically modified Stokes integration kernels. Comparisons were made among Global Positioning System heights, optical levelling on the Australian Height Datum (Tasmania) and several gravimetric geoid solutions at 14 points. This showed that the Vanicek and Kleusberg (1987) modification for a degree 20 spheroid and cap radius of 15 gave the smallest standard deviation of 186mm, which is a slight improvement upon the 232mm achieved when using AUSGEOID93.

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