Australian Bathymetry and Topography Grid at 0.0025 Degree Resolution

2009 bathymetry data compiled by Geoscience Australia from multibeam, single beam, and satellite-derived sources, combined with onshore topography. The 0.0025 degree resolution grid covers Australia and its adjoining Exclusive Economic Zone, excluding offshore territories. Topographic data incorporates revised Australian and New Zealand grids and the 90m SRTM DEM.

Use Cases

• Model coastal erosion and inundation based on integrated bathymetry and topography data.
• Analyze seabed morphology for marine habitat mapping based on compiled multibeam and single beam observations.
• Create high-resolution terrain visualizations for maritime navigation planning based on the 0.0025 degree grid.
• Conduct geological studies of the continental shelf based on the integration of direct soundings and satellite-derived bathymetry.

Strengths

• Integrates multiple high-resolution data sources, including a 0.0025 degree topography grid and 90m SRTM DEM.
• Bathymetry data from 2009 compiled from direct observations like multibeam and single beam surveys.
• Spatial coverage includes Australia's onshore topography and the bathymetry of its adjoining Exclusive Economic Zone.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The area selected does not include data from Australia's marine jurisdiction offshore from the Territory of Heard and McDonald Islands and the Australian Antarctic Territory.
• In areas without direct sounding data, the grid is based on lower-resolution (1-2 arc minute) satellite-derived bathymetry.

Provenance

Source

Geoscience Australia, Australian Ocean Data Network

Collection Method

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

Time Range

Bathymetry data from 2009, topography grids from 2008.

Freshness

Last updated 2026-04-10 22:00:45.923810; freshness should be verified.

Geography

Australia and its adjoining Exclusive Economic Zone.