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

Southwest Australia (24-46°S, 106-140°E) is covered by digital grids of bathymetry, gravity, and magnetic data. The Australian Geological Survey Organisation (AGSO) produced these grids using all available land, marine, and satellite data, with input from Desmond Fitzgerald & Associates and the Australian Hydrographic Office. The results were obtained by performing a network adjustment on marine ship-track data and combining these with onshore and satellite-derived data.

Use Cases

• Modeling seafloor topography and geological structures based on integrated bathymetric data.
• Analyzing crustal density variations and tectonic features based on gravity anomaly grids.
• Mapping magnetic anomalies for mineral and petroleum exploration based on magnetic field data.
• Conducting regional geophysical studies based on combined land, marine, and satellite data sources.

Strengths

• Data integrates multiple sources: land, marine ship-track, and satellite-derived data.
• Covers a significant geographic quadrant of Australia (24-46°S, 106-140°E).
• Produced by the national geological survey (AGSO/Geoscience Australia) in cooperation with industry and hydrographic experts.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and data volume are unknown, which may limit suitability assessment.
• Data may reflect geographic and source bias inherent to the available ship-track and survey data.

Provenance

Source

Geoscience Australia Data (formerly Australian Geological Survey Organisation - AGSO)

Collection Method

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

Freshness

Last updated 2026-04-20 02:02:01.095471; freshness should be verified.

Geography

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