Australian Bathymetry and Topography Grid at 0.0025 Degree Resolution

A 2009 bathymetry and topography grid for Australia and its Exclusive Economic Zone, compiled by Geoscience Australia. The grid integrates multibeam, single beam, digitised chart, and satellite-derived bathymetry with onshore topographic data from multiple sources. Its 0.0025-degree resolution is supported where direct bathymetric observations are sufficiently dense.

Use Cases

• Modeling coastal inundation and sea-level rise impacts based on integrated bathymetry and topography.
• Analyzing seafloor geomorphology for marine habitat mapping based on multibeam and single beam data.
• Creating high-resolution base maps for maritime navigation and resource management based on the compiled grid.
• Conducting geological and geophysical studies of the continental shelf based on the detailed bathymetric observations.

Strengths

• Integrates multiple authoritative data sources, including Geoscience Australia's 2008 topography grid and ETOPO satellite bathymetry.
• Provides a high 0.0025-degree resolution grid where direct observational data density supports it.
• Covers a defined geographic area encompassing Australia's onshore topography and offshore Exclusive Economic Zone bathymetry.

Limitations

• Data coverage is incomplete for Australia's marine jurisdiction near Heard and McDonald Islands and the Australian Antarctic Territory.
• The core bathymetric data is from 2009, which may not reflect recent changes.
• Row count and column-level documentation are unknown, limiting suitability assessment.

Provenance

Source

Geoscience Australia Data

Collection Method

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

Time Range

Bathymetry data compiled in 2009, incorporating topography grids from 2008.

Freshness

Last updated 2026-04-30 15:20:26.588485; freshness should be verified.

Geography

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