Australian Bathymetry and Topography Grid at 0.0025 Degree Resolution

Australia's topography and the bathymetry of its adjoining Exclusive Economic Zone are provided in this web service. The 2009 bathymetry data were compiled by Geoscience Australia from multibeam, single beam, and satellite-derived sources, while the onshore topography is based on revised national and international grids. The service, last updated on 2026-06-05, is provided by the Australian Ocean Data Network.

Use Cases

• Modeling coastal inundation and sea-level rise impacts based on integrated bathymetry and topography.
• Analyzing seafloor geomorphology for marine habitat mapping based on multibeam and single beam data.
• Creating base maps for maritime navigation and resource exploration using the compiled bathymetric grid.
• Conducting hydrological and watershed studies leveraging the high-resolution onshore topography data.

Strengths

• Integrates bathymetry and topography into a single seamless grid for the Australian region.
• Uses high-resolution (0.0025 degree) data where direct observations like swath bathymetry are available.
• Compiled by the authoritative national agency Geoscience Australia from multiple direct measurement sources.

Limitations

• Data coverage excludes Australia's marine jurisdiction offshore from Heard and McDonald Islands and the Australian Antarctic Territory.
• In areas without sounding data, the grid is based on lower-resolution (1-2 arc minute) satellite-derived bathymetry.
• Description metadata is limited; actual data quality and specific methodologies require manual inspection after access.

Provenance

Source

Geoscience Australia, Geographx, and sources for ETOPO and SRTM DEM data.

Collection Method

Compiled from multibeam, single beam, digitised chart, and satellite-derived bathymetry data.

Time Range

Bathymetry data from 2009; source grids range from 1997 to 2008.

Freshness

Last updated 2026-06-05 07:44:04.500666; freshness should be verified.

Geography

Topography of Australia and bathymetry of the adjoining Australian Exclusive Economic Zone.