Southwest Australia Geophysical Grids for Bathymetry, Gravity and Magnetic Data

Geoscience Australia Data produced digital bathymetry, gravity and magnetic grids for southwest Australia. The grids cover the region from 24 to 46 degrees South and 106 to 140 degrees East, integrating land, marine, and satellite data. The work involved cooperation with Desmond Fitzgerald & Associates and significant bathymetric data input from the Australian Hydrographic Office.

Use Cases

• Modeling seafloor topography based on the described bathymetry grids
• Analyzing crustal density variations based on the described gravity data
• Mapping magnetic anomalies for geological interpretation based on the described magnetic grids
• Integrating multi-source geophysical data for regional studies based on the described network adjustment of ship-track, onshore, and satellite data

Strengths

• Grids cover a large geographic area spanning 24 to 46 degrees South and 106 to 140 degrees East
• Data integrates multiple sources including land, marine, and satellite-derived inputs
• Work was done in cooperation with specialized external consultants (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 updated date is 2026-05-14 03:41:17.727350

Provenance

Source

Geoscience Australia Data

Collection Method

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

Freshness

Last updated 2026-05-14 03:41:17.727350

Geography

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