Australian Bathymetry and Topography Grids at 0.0025 Degree Resolution

Geospatial grids combine the topography of Australia and bathymetry of its Exclusive Economic Zone. The 2009 bathymetry data were compiled by Geoscience Australia from multibeam and single beam observations, supplemented by satellite-derived bathymetry in offshore areas. Onshore topography is based on revised Australian and New Zealand grids and a 90m SRTM DEM.

Use Cases

• Model coastal erosion and flooding based on integrated bathymetry and topography data.
• Analyze seabed morphology for marine habitat mapping using compiled multibeam and single beam data.
• Create nautical charts and navigation aids using digitised chart data mentioned in the description.
• Study continental shelf dynamics by comparing high-resolution grids with broader satellite-derived bathymetry.

Strengths

• Integrates onshore topography and offshore bathymetry into a continuous geospatial service.
• Uses a 0.0025 degree resolution grid where direct bathymetric observations are sufficiently dense.
• Compiled from multiple authoritative sources including Geoscience Australia, ETOPO, and SRTM DEM.

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.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Australian Ocean Data Network

Collection Method

Compiled by Geoscience Australia from multibeam, single beam, digitised chart, and satellite-derived sources.

Time Range

Primary bathymetry data from 2009, with topography grids from 2008.

Freshness

Last updated 2026-04-16 14:09:56.705971; freshness should be verified.

Geography

Australia and its adjoining Exclusive Economic Zone.