Australian Bathymetry and Topography Grid at 0.0025 Degree Resolution

A 2009 bathymetry and topography grid covers Australia and its Exclusive Economic Zone, compiled by Geoscience Australia from multibeam, single beam, and satellite-derived sources. The grid provides a 0.0025-degree resolution where direct observations are dense, blending with lower-resolution ETOPO data elsewhere. Topographic data incorporates revised Australian and New Zealand grids alongside the 90m SRTM DEM.

Use Cases

• Modeling coastal inundation and sea-level rise impacts based on integrated bathymetry and topography.
• Analyzing seafloor morphology for marine habitat mapping based on compiled multibeam and single beam data.
• Creating base maps for maritime navigation and resource exploration using the high-resolution grid.
• Conducting geophysical studies of the continental shelf using the blended satellite and direct observation data.

Strengths

• Integrates multiple authoritative data sources, including Geoscience Australia's 2009 bathymetry compilation and the revised 2008 topography grid.
• Provides high 0.0025-degree resolution in areas with dense direct observations like swath bathymetry.
• Covers a defined geographic area encompassing Australia's landmass and adjoining Exclusive Economic Zone.

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.
• Data may reflect geographic and temporal bias inherent to the 2009 compilation and source datasets.

Provenance

Source

Geoscience Australia, Australian Ocean Data Network

Collection Method

Compiled from multibeam, single beam, digitised chart, and satellite-derived (ETOPO, SRTM) sources.

Time Range

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

Freshness

Last updated 2026-06-23 03:57:48.560760; freshness should be verified.

Geography

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