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

AGSO produced digital grids for bathymetry, gravity, and magnetic fields across a large quadrant of Southwest Australia. The dataset integrates land, marine, and satellite data, with bathymetric input from the Australian Hydrographic Office. Results were obtained by performing a network adjustment on marine ship-track data.

Use Cases

• Modeling tectonic plate boundaries based on integrated gravity and magnetic anomaly data.
• Charting seafloor topography for maritime navigation based on bathymetric grids.
• Conducting geological resource exploration based on combined land and marine geophysical measurements.
• Calibrating satellite-derived gravity data based on adjusted marine ship-track measurements.

Strengths

• Integrates three distinct geophysical data types: bathymetry, gravity, and magnetics.
• Combines data from multiple sources: land surveys, marine ship-tracks, and satellites.
• Covers a large geographic area defined as 24-46S, 106-140E.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Freshness should be verified as the last update is listed as 2026-06-05.

Provenance

Source

Australian Geological Survey Organisation (AGSO), in cooperation with Desmond Fitzgerald & Associates and the Australian Hydrographic Office.

Collection Method

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

Freshness

Last updated 2026-06-05 06:56:51.725378

Geography

Southwest quadrant of Australia (24 - 46S, 106-140E).