Australian Bathymetry and Topography Grid at 0.0025 Degree Resolution

Geoscience Australia compiled bathymetry and topography data for Australia and its Exclusive Economic Zone. The 2009 bathymetry data integrates multibeam and single beam soundings, while onshore topography is based on a revised 0.0025-degree grid. In areas lacking direct soundings, the grid incorporates satellite-derived bathymetry from ETOPO models.

Use Cases

• Model coastal inundation and sea-level rise impacts based on integrated bathymetry and topography.
• Analyze seabed morphology for habitat mapping using compiled multibeam and single beam data.
• Create terrain visualizations for maritime navigation based on the high-resolution grid where data density supports it.

Strengths

• Integrates bathymetry and topography into a single 0.0025-degree resolution grid.
• Bathymetry data from 2009 was compiled from direct observations like multibeam and digitized charts.
• Uses revised 0.0025-degree topography grids for Australia and New Zealand.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The 0.0025-degree resolution is only supported where direct bathymetric observations are sufficiently dense.
• Data from Australia's marine jurisdiction offshore from Heard and McDonald Islands and the Australian Antarctic Territory is excluded.

Provenance

Source

Australian Ocean Data Network, Geoscience Australia

Collection Method

Compiled from multibeam, single beam, digitized charts, and satellite-derived bathymetry.

Time Range

Bathymetry data from 2009; topography grids from 2008.

Freshness

Last updated 2026-06-16 18:05:25.295691; freshness should be verified.

Geography

Australia and adjoining Australian Exclusive Economic Zone.