Geophysical Grids for Southwest Australian Seafloor

AGSO produced digital grids covering bathymetry, gravity, and magnetic data for the southwest quadrant of Australia. The work integrated land, marine, and satellite data through a network adjustment of marine ship-track information. This dataset was last updated in April 2026.

Use Cases

• Modeling seafloor topography and geological structures from the bathymetry grid.
• Analyzing crustal density variations and subsurface features using the gravity anomaly grid.
• Mapping magnetic anomalies from the magnetic grid to identify rock types and tectonic boundaries.
• Integrating bathymetric, gravity, and magnetic data for a unified geophysical interpretation of the region.

Strengths

• Covers a large geographic region spanning 24-46S latitude and 106-140E longitude.
• Integrates multiple data sources including land surveys, marine ship-tracks, and satellite-derived data.

Limitations

• Specific row counts, column details, and data resolution within the grids are unknown.
• The dataset's age is unclear as the 'last updated' date appears to be a future placeholder (2026).

Provenance

Source

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

Collection Method

Created by performing a network adjustment on marine ship-track data and combining it with onshore and satellite-derived data.

Time Range

null

Freshness

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Geography

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