Geophysical Bathymetry, Gravity, and Magnetic Grids for Southwest Australia

AGSO produced digital grids of bathymetry, gravity, and magnetic data for Southwest Australia (24-46S, 106-140E). The work integrated all available land, marine, and satellite data through a network adjustment of marine ship-track data. Collaboration included Desmond Fitzgerald & Associates and the Australian Hydrographic Office.

Use Cases

• Modeling seabed topography based on bathymetry grid data
• Analyzing crustal density variations based on gravity anomaly grids
• Mapping magnetic anomalies for geological interpretation based on magnetic grids
• Integrating land and marine geophysical data for regional studies based on the combined data sources

Strengths

• Grids cover a large geographic quadrant (24-46S, 106-140E)
• Data integrates multiple sources: land, marine, and satellite
• Work involved collaboration with Desmond Fitzgerald & Associates and the Australian Hydrographic Office

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; last metadata update was 2026-05-05

Provenance

Source

Australian Geological Survey Organisation (AGSO)

Collection Method

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

Geography

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