Australian Bathymetry and Topography Grid at 0.0025 Degree Resolution

A 2009 compilation of bathymetric and topographic data for Australia and its Exclusive Economic Zone, excluding offshore territories. The grid was compiled by Geoscience Australia from multibeam, single beam, and satellite-derived sources, with a 0.0025-degree resolution where direct observations are dense. Onshore topography incorporates revised Australian and New Zealand grids and the 90m SRTM DEM.

Use Cases

• Modeling coastal erosion and sediment transport based on integrated bathymetric and topographic elevation data.
• Analyzing seabed morphology for marine habitat mapping based on multibeam and single beam observations.
• Creating base maps for maritime navigation and resource exploration based on the compiled bathymetry grid.
• Conducting hydrological and flood risk studies based on the high-resolution onshore topography data.

Strengths

• Integrates bathymetry and topography into a single seamless grid for coastal analysis.
• Uses a high 0.0025-degree resolution grid where direct bathymetric observations are sufficiently dense.
• Derived from multiple authoritative sources including Geoscience Australia, ETOPO, and SRTM DEM.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• 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.

Provenance

Source

Geoscience Australia, Australian Ocean Data Network

Collection Method

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

Time Range

2009

Freshness

Last updated 2026-06-27 18:34:26.440722; freshness should be verified.

Geography

Australia and the adjoining Australian Exclusive Economic Zone