Australian Bathymetry and Topography Grid at 0.0025 Degree Resolution

Australia's topography and the bathymetry of its adjoining Exclusive Economic Zone are represented in this grid. The 2009 bathymetry data were compiled by Geoscience Australia from multibeam, single beam, and satellite-derived sources. Onshore topography is based on a revised 0.0025-degree grid, New Zealand data, and a 90m SRTM DEM.

Use Cases

• Modeling coastal inundation based on integrated land and seafloor elevation data.
• Analyzing seafloor geomorphology based on multibeam and single beam bathymetry observations.
• Creating regional maps for marine spatial planning based on the high-resolution grid where data density supports it.
• Studying continental shelf features based on the compiled bathymetric and topographic data.

Strengths

• Integrates bathymetry and topography into a single, continuous elevation model.
• Uses a high 0.0025-degree resolution grid where direct observational data is sufficiently dense.
• Compiled by Geoscience Australia, a national geological survey, from multiple authoritative sources.

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 does not include data from Australia's marine jurisdiction offshore from Heard and McDonald Islands and the Australian Antarctic Territory.

Provenance

Source

Geoscience Australia Data

Collection Method

Compiled from multibeam, single beam, digitised chart, and satellite-derived bathymetry data, along with topographic grids.

Time Range

Bathymetry data from 2009 compilation; source datasets range from 1997 to 2008.

Freshness

Last updated 2026-03-25 19:21:10.969676; freshness should be verified.

Geography

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