Australian Bathymetry and Topography Grid at 0.0025 Degree Resolution

Geoscience Australia compiled the 2009 bathymetry data for the Australian Exclusive Economic Zone from multibeam, single beam, and satellite-derived sources. The dataset integrates this bathymetry with onshore topography from revised Australian and New Zealand grids and the 90m SRTM DEM. The service is provided by the Australian Ocean Data Network and was last updated in April 2026.

Use Cases

• Modeling coastal erosion and inundation based on integrated bathymetry and topography data.
• Creating high-resolution seafloor maps for marine navigation based on compiled multibeam and chart data.
• Analyzing continental shelf morphology based on the 0.0025-degree resolution grid where data density is sufficient.
• Studying offshore geological features using satellite-derived bathymetry for areas beyond the shelf.

Strengths

• Integrates bathymetric observations from multiple sources including multibeam, single beam, and digitized charts.
• Provides a high 0.0025-degree resolution grid where direct observation data is sufficiently dense.
• Combines onshore topography from authoritative sources like the revised Australian grid and 90m SRTM DEM.

Limitations

• Row count and column-level documentation are absent; field semantics must be inferred after download.
• The 0.0025-degree resolution is not supported in all areas, relying on lower-resolution satellite data offshore.
• Data coverage excludes Australia's marine jurisdiction offshore from Heard and McDonald Islands and the Australian Antarctic Territory.

Provenance

Source

Geoscience Australia and the Australian Ocean Data Network.

Collection Method

Compiled from multibeam, single beam, digitized chart, and satellite-derived bathymetry sources, integrated with topography grids.

Time Range

Bathymetry data from 2009 compilation; source topography grids from 2008.

Freshness

Last updated 2026-04-16 09:20:07.558949; freshness should be verified.

Geography

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