High-Resolution Depth Model (Northern Australia)
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High-Resolution Depth Model (Northern Australia) 
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**Authored on**: 2018-03   
**Updated on**: 2020-08  
**Author/s**: Rob J. Beaman, Michele Spinoccia  
**License**: CC BY Attribution 4.0 International License

View the [original metadata page](https://cmi.ga.gov.au/data-products/marine/299/high-resolution-depth-model-northern-australia) for the most up-to-date information on this product.

Abstract
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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.

What this product offers
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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.

Accuracy and limitations
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Not to be used for navigational purposes.

This dataset is published with the permission of the CEO, Geoscience Australia.

References
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Wessel, P., Smith, W.H.F. (1991). Free software helps map and display data. EOS, Transactions, American Geophysical Union 72, 441.

Whiteway, T.G. (2009). Australian Bathymetry and Topography Grid, June 2009. Geoscience Australia Record 2009/21, Canberra, Australia, pp. 46.

Contacts
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For questions or more information about this product, email [DEA Support](mailto:dea@ga.gov.au?subject=Data%20Products%20support%20for%20High-Resolution%20Depth%20Model%20%28Northern%20Australia%29).