Australian Bathymetry and Topography Grid at 0.0025 Degree Resolution

Geoscience Australia compiled this 2009 bathymetry and topography grid covering Australia and its Exclusive Economic Zone. The service integrates multibeam, single beam, digitised chart, and satellite-derived bathymetry with onshore topographic data from sources including a revised Australian grid and 90m SRTM DEM. The 0.0025-degree resolution is supported where direct bathymetric observations are sufficiently dense.

Use Cases

• Modeling coastal erosion and inundation based on integrated bathymetry and topography data.
• Analyzing seafloor geomorphology for marine habitat mapping using the compiled multibeam and single beam data.
• Creating regional-scale 3D visualizations of the Australian landmass and continental shelf.
• Conducting hydrological or oceanographic simulations based on the high-resolution grid where data density allows.

Strengths

• Integrates multiple authoritative sources including Geoscience Australia's 2008 topography grid and 90m SRTM DEM.
• Provides a 0.0025-degree resolution grid where direct observational data is dense, such as areas with swath bathymetry.
• Covers a defined spatial area including Australia's onshore topography and the bathymetry of its 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.
• The area selected does not include data from Australia's marine jurisdiction offshore from the Territory of Heard and McDonald Islands and the Australian Antarctic Territory.

Provenance

Source

Geoscience Australia Data

Collection Method

Compiled from multibeam, single beam, digitised chart, and satellite-derived bathymetry (ETOPO) sources, integrated with revised topographic grids.

Time Range

Primary bathymetry data from 2009, incorporating topographic grids from 2008.

Freshness

Last updated 2026-04-20 03:13:37.718057; freshness should be verified.

Geography

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