Geophysical Grids for Southwest Australia: Bathymetry, Gravity, and Magnetic Data

Geoscience Australia produced digital bathymetry, gravity, and magnetic grids covering the southwest quadrant of Australia (24-46°S, 106-140°E). The results were obtained by performing a network adjustment on marine ship-track data and combining these with onshore and satellite-derived data. The work was done in cooperation with Desmond Fitzgerald & Associates and the Australian Hydrographic Office.

Use Cases

• Modeling tectonic plate boundaries based on gravity and magnetic anomaly grids.
• Mapping seafloor topography for marine navigation and habitat studies based on bathymetry grids.
• Integrating land and marine geophysical data for regional geological interpretation based on the combined dataset.

Strengths

• Integrates multiple data sources: land, marine, and satellite-derived data.
• Covers a defined geographic region of 24-46°S and 106-140°E.
• Data was processed using a network adjustment on marine ship-track data.

Limitations

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

Provenance

Source

Geoscience Australia Data, in cooperation with Desmond Fitzgerald & Associates and the Australian Hydrographic Office.

Collection Method

Network adjustment on marine ship-track data combined with onshore and satellite-derived data.

Freshness

Last updated 2026-04-30 13:44:47.429307; freshness should be verified.

Geography

Southwest quadrant of Australia (24-46°S, 106-140°E), including the Great Australian Bight.