Australian Bathymetry and Topography Grid at 0.0025 Degree Resolution

2009 bathymetry data compiled by Geoscience Australia from multibeam, single beam, and satellite-derived sources, combined with onshore topography grids. The dataset covers the topography of Australia and the bathymetry of the adjoining Australian Exclusive Economic Zone, excluding areas offshore from Heard and McDonald Islands and the Australian Antarctic Territory. The grid provides a 0.0025-degree resolution where direct observations are dense, blending with coarser global models elsewhere.

Use Cases

• Modeling coastal inundation and sea-level rise impacts based on integrated topography and bathymetry.
• Analyzing seafloor morphology for geological or habitat mapping based on multibeam and chart data.
• Creating base maps for marine spatial planning using the defined Australian Exclusive Economic Zone coverage.
• Calibrating or validating satellite-derived bathymetry models using the areas with direct sounding observations.

Strengths

• Integrates multiple authoritative sources including Geoscience Australia's 2009 bathymetry compilation and revised 2008 topography grid.
• Provides high 0.0025-degree resolution in areas with dense direct observations like swath bathymetry.
• Explicitly defines spatial coverage, including exclusions for specific offshore territories.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Australian Ocean Data Network, Geoscience Australia

Collection Method

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

Time Range

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

Freshness

Last updated 2026-06-04 07:16:13.373227; freshness should be verified.

Geography

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