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 data from multiple grids. The dataset covers the topography of Australia and the bathymetry of its adjoining Exclusive Economic Zone, excluding areas offshore from Heard and McDonald Islands and the Australian Antarctic Territory. The 0.0025-degree resolution grid is supported where direct observations are dense, while other areas use lower-resolution ETOPO models.

Use Cases

• Modeling coastal erosion and inundation based on integrated bathymetry and topography data.
• Analyzing seafloor morphology for marine habitat mapping based on compiled multibeam and single beam data.
• Creating regional geophysical models based on the 0.0025-degree resolution grid where data density allows.
• Studying shelf and slope features using the blend of high-resolution survey data and satellite-derived bathymetry.

Strengths

• Integrates bathymetry and topography into a single seamless grid for the Australian region.
• Uses multiple high-quality sources, including direct observations from multibeam surveys and digitized charts.
• Provides a 0.0025-degree resolution grid where direct bathymetric observations are sufficiently dense.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to the specific sources and coverage areas mentioned.

Provenance

Source

Geoscience Australia and the Australian Ocean Data Network.

Collection Method

Compiled from multibeam, single beam, digitized chart, and satellite-derived (ETOPO) data, along with revised national and regional topography grids.

Time Range

Primary bathymetry data from 2009, incorporating topography grids from 2008 and earlier reference models.

Freshness

Last updated 2026-04-10 17:54:12.096226; freshness should be verified.

Geography

Australia and its adjoining Exclusive Economic Zone, excluding offshore areas from Heard and McDonald Islands and the Australian Antarctic Territory.