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

    Towards the unification of the Australian Height Datum between mainland and Tasmania using GPS and AUSGeoid98

    146567_146567.pdf (103.1Kb)
    Access Status
    Open access
    Authors
    Featherstone, Will
    Date
    2000
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Featherstone, Will. 2000. Towards the unification of the Australian Height Datum between mainland and Tasmania using GPS and AUSGeoid98. Geomatics Research Australasia. 73: pp. 33-54.
    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/20.500.11937/32752
    Collection
    • Curtin Research Publications
    Abstract

    The AUSGeoid98 geoid model is used in conjunction with nation-wide GPS networks and spirit-levelled Australian Height Datum (AHD) heights at 1013 points, and subsets thereof, to estimate the vertical offset between the AHD as realised on the Australian mainland [AHD(Mainland)] and in Tasmania [AHD(Tas)]. It appears that the AHD(Tas) is offset below the AHD(Mainland) somewhere between (26±33)cm and (12±12)cm, which is in broad agreement with previous estimates made by Rapp (1994) and Rizos et al. (1991), as well as with long-wavelength sea-surface topography models. However, the estimates of the vertical datum difference are heavily influenced by the spatial distribution of the GPS-AHD control points used, with different offsets being computed according to latitude and proximity to the coast. This is most probably due to the effect of fixing of multiple tide gauges to mean sea level in the adjustment of the AHD. This has implications for any future unification of the AHD(Mainland) and AHD(Tas) into a single, global vertical datum, where the appropriate datum connection points must first be chosen.

    Related items

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

    • An examination of the Australian Height Datum
      Filmer, Michael Shaun (2010)
      The Australian Height Datum (AHD) was established in 1971, and is the basis for all physical heights in Australia. However, a complete revision of the AHD has never occurred, despite problems that, although not always ...
    • Three viable options for a new Australian vertical datum
      Filmer, Michael; Featherstone, Will (2012)
      While the Intergovernmental Committee on Surveying and Mapping (ICSM) has stated that the Australian Height Datum (AHD) will remain Australia’s official vertical datum for the short to medium term, the AHD contains ...
    • 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 ...
    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.