Australian Bathymetry and Topography Grid at 0.0025 Degree Resolution

Geoscience Australia compiled this bathymetry and topography grid for Australia and its Exclusive Economic Zone. The 2009 bathymetry data integrates multibeam, single beam, and satellite-derived sources, while onshore topography is based on a revised 0.0025-degree grid, New Zealand data, and SRTM DEM. The service excludes data from offshore marine jurisdictions near Heard and McDonald Islands and the Australian Antarctic Territory.

Use Cases

• Modeling coastal erosion and inundation based on integrated bathymetry and topography data.
• Planning marine infrastructure routes using high-resolution seafloor mapping.
• Conducting geological studies of the continental shelf using compiled multibeam and single beam observations.
• Creating base maps for environmental monitoring across the Australian EEZ.

Strengths

• Integrates multiple high-quality sources including 2009 bathymetry compilations and SRTM DEM.
• Provides a 0.0025-degree resolution grid where direct bathymetric observations are sufficiently dense.
• Covers a defined geographic area including Australia's onshore topography and adjoining EEZ bathymetry.

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 grid resolution is only supported in areas with dense direct observations, relying on lower-resolution satellite data elsewhere.

Provenance

Source

Geoscience Australia Data

Collection Method

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

Time Range

Bathymetry data compiled from 2009; topographic grids from 2008.

Freshness

Last updated 2026-05-14 04:51:58.444629; freshness should be verified.

Geography

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