Australian Bathymetry and Topography Grid at 0.0025 Degree Resolution

A 2009 bathymetry and topography grid compiled by Geoscience Australia covers the Australian landmass and its Exclusive Economic Zone. The data integrates multibeam, single beam, digitized chart, and satellite-derived sources, with a 0.0025-degree resolution supported where direct observations are dense. Topographic data onshore is based on revised Australian and New Zealand grids and the 90m SRTM DEM.

Use Cases

• Modeling coastal inundation and sea-level rise impacts based on integrated bathymetry and topography.
• Analyzing seabed morphology for habitat mapping based on multibeam and single beam data.
• Creating high-resolution digital elevation models for marine navigation based on digitized chart data.
• Conducting geophysical studies of the continental shelf based on the integration of direct observations and satellite-derived bathymetry.

Strengths

• Integrates multiple authoritative data sources including Geoscience Australia's 2008 topography grid and satellite-derived ETOPO data.
• Provides a high 0.0025-degree resolution grid where direct bathymetric observations are sufficiently dense.

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 excludes data from Australia's marine jurisdiction offshore from Heard and McDonald Islands and the Australian Antarctic Territory.

Provenance

Source

Geoscience Australia, Australian Ocean Data Network

Collection Method

Compiled from multibeam, single beam, digitized chart, and satellite-derived sources.

Time Range

Primary bathymetry data from 2009; incorporates topography grids from 2008.

Freshness

Last updated 2026-06-16 22:06:20.789969; freshness should be verified.

Geography

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