Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    A New GPS-based evaluation of distortions in the Australian Height Datum in Western Australia

    115310_9171_vol91pt2_199-206.pdf (514.9Kb)
    Access Status
    Open access
    Authors
    Featherstone, Will
    Filmer, Michael
    Date
    2008
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Featherstone, Will and Filmer, Michael. 2008. A New GPS-based evaluation of distortions in the Australian Height Datum in Western Australia. Journal of the Royal Society of Western Australia, 91 (2): pp. 199-206.
    Source Title
    Journal of the Royal Society of Western Australia
    ISSN
    0035922X
    Faculty
    Department of Spatial Sciences
    The Western Australian School of Mines
    Science and Engineering
    Remarks

    Links to the Royal Society of Western Australia's home page: http://www.rswa.org.au/ and Journal of the Royal Society of Western Australia: http://www.rswa.org.au/content/The_Journal.htm

    URI
    http://hdl.handle.net/20.500.11937/33123
    Collection
    • Curtin Research Publications
    Abstract

    Previous work on assessing the errors in the Australian Height Datum (AHD) across Western Australia used fewer and older global positioning system (GPS) data and a global quasigeoid model. A larger and improved State-wide set of 243 GPS-derived ellipsoidal heights and a regional gravimetric quasigeoid model are now available. Therefore, it is possible to re-evaluate the north-south tilt in the AHD and look for regional systematic distortions with some more confidence in Western Australia. This new analysis shows an apparent north-south tilt of ~0.27 mm/km in the existing AHD over the whole of the State, but which increases to ~0.6 mm/km over smaller regions, showing regional systematic distortions. When mean sea-level constraints are removed from the AHD by a minimally constrained least-squares adjustment of the spirit-levelling observations that is less prone to the effect of sea-surface topography, the north-south tilt reduces to ~0.18 mm/km, but the regional distortions remain, showing that errors are present in the spirit-levelling observations.

    Related items

    Showing items related by title, author, creator and subject.

    • The AUSGeoid09 model of the Australian Height Datum
      Featherstone, Will; Kirby, Jonathan; Hirt, Christian; Filmer, Michael; Claessens, Sten; Brown, N.; Hu, Guorong; Johnston, G. (2011)
      AUSGeoid09 is the new Australia-wide gravimetric quasigeoid model that has been a posteriori fitted to the Australian Height Datum (AHD) so as to provide a product that is practically useful for the more direct determination ...
    • The apparent British sea slope is caused by systematic errors in the levelling-based vertical datum
      Penna, N.; Featherstone, Will; Gazeaux, J.; Bingham, R. (2013)
      The spirit-levelling–based British vertical datum (Ordnance Datum Newlyn) implies a south–north apparent slope in mean sea level of up to 53 mm deg–1 latitude, due to the datum falling on heading northwards. Although this ...
    • Fitting AUSGeoid98 to the Australian Height Datum Using GPS-Levelling and Least Squares Collocation: Application of a Cross-Validation Technique
      Featherstone, Will; Sproule, David (2006)
      In an absolute sense and over long (>100 km) baselines, the AUSGeoid98 gravimetric-only geoid model does not always allow the accurate transformation of Global Positioning System (GPS)-derived ellipsoidal heights to ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.