Australian Bathymetry and Topography Grid at 0.0025 Degree Resolution

Australian topography and the bathymetry of its adjoining Exclusive Economic Zone, compiled by Geoscience Australia. The 2009 bathymetry data integrates multibeam, single beam, and satellite-derived sources, while onshore topography is based on revised national and New Zealand grids and SRTM DEM data. The service provides a 0.0025-degree resolution grid where direct observations are sufficiently dense.

Use Cases

• Modeling coastal erosion and inundation based on integrated land-sea elevation data.
• Analyzing seafloor morphology for marine habitat mapping using compiled bathymetric observations.
• Creating base maps for maritime navigation and resource management within the Australian EEZ.
• Conducting climate change impact studies on shorelines using the high-resolution topographic grid.

Strengths

• Integrates multiple authoritative sources, including Geoscience Australia's 2009 bathymetry compilation and the revised 2008 Australian topography grid.
• Provides high 0.0025-degree resolution in areas with dense direct observations like swath bathymetry.
• Covers a defined geographic scope encompassing 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 grid resolution is variable, relying on lower-resolution (1-2 arc minute) satellite-derived bathymetry in areas off the Australian shelf.

Provenance

Source

Geoscience Australia Data

Collection Method

Compiled from multibeam, single beam, digitized chart, and satellite-derived bathymetry sources, combined with national and international topographic grids.

Time Range

Bathymetry data from 2009, with topographic grids from 2008 and earlier foundational datasets.

Freshness

Last updated 2026-04-30 14:51:46.727634; freshness should be verified.

Geography

Topography of Australia and bathymetry of the adjoining Australian Exclusive Economic Zone, excluding offshore territories near Heard and McDonald Islands and the Australian Antarctic Territory.