Geophysical Grids for Southwest Australia: 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 structures based on gravity and magnetic anomaly grids.
• Mapping seafloor topography for marine navigation and habitat studies based on bathymetry data.
• Integrating multi-source geophysical data for regional geological surveys.
• Calibrating satellite-derived gravity measurements with ship-track survey data.

Strengths

• Data integrates three distinct geophysical measurement 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.
• Produced by the Australian Geological Survey Organisation (AGSO) in cooperation with industry and government partners.

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 and source bias inherent to the specific survey methods and region.

Provenance

Source

Australian Geological Survey Organisation (AGSO), Desmond Fitzgerald & Associates, 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 07:15:51.452648; freshness should be verified.

Geography

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