Australian Bathymetry and Topography Grid with Hillshading, 2009

Australian waters and territories between 92°E and 172°E, and 8°S and 60°S. This dataset contains a 9 arc second (~250m) resolution digital elevation model (DEM) and derived hillshading, produced by Geoscience Australia in 2009. The grid integrates bathymetric soundings, satellite-derived bathymetry, and topographic data from multiple sources.

Use Cases

• Create shaded relief maps based on the provided hillshading GeoTIFF.
• Model seafloor terrain for marine navigation based on the bathymetric grid.
• Analyze coastal elevation changes based on the integrated topography and bathymetry data.
• Visualize underwater features for geological studies based on the high-resolution grid where data is dense.

Strengths

• Provides a consistent grid at 9 arc second (~250m) resolution for a large geographic area.
• Integrates multiple data sources, including direct bathymetric observations and satellite-derived bathymetry.
• Covers Australian waters and territories including Norfolk, Christmas, and Cocos (Keeling) Islands.

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 0.0025 decimal degree resolution is only supported where direct bathymetric observations are sufficiently dense.

Provenance

Source

Geoscience Australia, via the Australian Ocean Data Network (AODN) and eAtlas.

Collection Method

Produced from a joint project between Geoscience Australia and the National Oceans Office, integrating bathymetric surveys, digitized charts, and satellite data.

Time Range

Data reflects conditions up to the 2009 update.

Freshness

Last updated 2026-07-16 03:14:18.238477; freshness should be verified.

Geography

Australian water column jurisdiction between 92°E and 172°E, and 8°S and 60°S, including waters adjacent to Australia, Tasmania, Macquarie Island, Norfolk Island, Christmas Island, and Cocos (Keeling) Islands.