Australian Bathymetry and Topography Grid at 0.0025 Degree Resolution

A geospatial web service provides combined bathymetry and topography data for Australia and its Exclusive Economic Zone. The data was compiled by Geoscience Australia, incorporating multibeam, single beam, and satellite-derived sources from 2009 and earlier. The grid resolution is 0.0025 degrees where direct observations are dense, blending with broader-scale satellite data elsewhere.

Use Cases

• Model coastal inundation scenarios based on the combined bathymetry and topography grid.
• Analyze seabed morphology for marine habitat mapping based on the compiled bathymetric observations.
• Generate base maps for maritime navigation and planning using the integrated topographic and bathymetric data.
• Assess continental shelf gradients and features based on the multi-source data compilation.

Strengths

• Data integrates multiple authoritative sources including Geoscience Australia grids and ETOPO models.
• Grid resolution of 0.0025 degrees is supported in areas with dense direct observations like swath bathymetry.
• Coverage includes both onshore Australian topography and offshore bathymetry of the Exclusive Economic Zone.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The area selected excludes data from Australia's marine jurisdiction offshore from Heard and McDonald Islands and the Australian Antarctic Territory.
• Last updated 2026-05-05 03:09:39.899735; freshness should be verified.

Provenance

Source

Geoscience Australia, Australian Ocean Data Network

Collection Method

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

Time Range

Primary bathymetry data from 2009; incorporates topography grids from 2008.

Geography

Australia and adjoining Australian Exclusive Economic Zone.