From Australian Oceans Data Network
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Sea surface topography (dynamic ocean topography) effects on the Australian Height Datum

Created 23/06/2025

Updated 23/06/2025

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The Australian Height Datum (AHD) forms the vertical spatial data framework for Australia. It was established in 1971 through the least-squares adjustment of >190,000km of spirit levelling and was adjusted to zero MSL at 30 tide gauges. The un-modelled sea surface topography (dynamic ocean topography) seems to have caused distortions in the AHD, and we plan to improve the AHD in the longer term.

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Additional Info

Field Value
Title Sea surface topography (dynamic ocean topography) effects on the Australian Height Datum
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/63a1247f-cdcb-413a-9944-e6db9c2878f4
Contact Point
Australian Ocean Data Network
W.Featherstone@curtin.edu.au
Reference Period 01/01/1996
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        112.0,
        -44.0
      ],
      [
        154.0,
        -44.0
      ],
      [
        154.0,
        -9.0
      ],
      [
        112.0,
        -9.0
      ],
      [
        112.0,
        -44.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Australian Oceans Data Network

Data Source

This dataset was originally found on Australian Oceans Data Network "Sea surface topography (dynamic ocean topography) effects on the Australian Height Datum". Please visit the source to access the original metadata of the dataset:
https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/sea-surface-topography-dynamic-ocean-topography-effects-on-the-australian-height-datum