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AusBathyTopo (Northern Australia) 30m 2018 - A regional-scale depth model (20180020C)

Created 17/10/2025

Updated 17/10/2025

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This dataset contains bathymetry (depth) products from the compilation of all available source bathymetry data within Northern Australia into a 30 m-resolution Digital Elevation Model (DEM). The Northern Australia region includes a broad continental shelf over 400 km wide extending out from Western Australia and the Northern Territory, and stretching over a distance of ~1500 km. This region encompasses numerous shallow coral reefs including the offshore Sahul Banks, sand cays, drowned ancient river valleys, broad inner-shelf banks and a rugged coastline. Bathymetry mapping of the seafloor is vital for the protection of Northern Australia, allowing for the safe navigation of shipping and improved environmental management. Shallow- and deep-water multibeam surveys have revealed the highly complex seafloor of the continental shelf and adjacent slope canyons draining into the Indian Ocean and Timor Sea. Airborne LiDAR bathymetry acquired by the Australian Hydrographic Office cover most of the Sahul Banks reefs, with some coverage gaps supplemented by satellite derived bathymetry. The Geoscience Australia-developed Intertidal Elevation Model DEM improves the source data gap along Northern Australia’s vast intertidal zone. All source bathymetry data were extensively edited as point clouds to remove noise, given a consistent WGS84 horizontal datum, and where possible, an approximate MSL vertical datum.

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Field Value
Title AusBathyTopo (Northern Australia) 30m 2018 - A regional-scale depth model (20180020C)
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/51206ec2-909b-425a-abc8-268115cecb16
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 31/05/2018 - 31/05/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        121.0,
        -18.0
      ],
      [
        133.0,
        -18.0
      ],
      [
        133.0,
        -8.0
      ],
      [
        121.0,
        -8.0
      ],
      [
        121.0,
        -18.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "AusBathyTopo (Northern Australia) 30m 2018 - A regional-scale depth model (20180020C)". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/ausbathytopo-northern-australia-30m-2018-a-regional-scale-depth-model-20180020c