Bathymetry and Potential Field Grids for Australia's Marine Margins

Australian Geological Survey Organisation produced digital bathymetry, gravity, and magnetic grids for Australia's marine margin. Grid resolutions range from 250 to 1000 meters, integrating ship-track data with satellite and onshore sources. The data represents a major upgrade of marine geophysical information for geological interpretation.

Use Cases

• Modeling seabed topography using the bathymetry grid data.
• Analyzing crustal density variations from the gravity anomaly grids.
• Mapping magnetic anomalies for geological structure interpretation.
• Integrating ship-track bathymetry with satellite-derived data for regional studies.
• Developing fundamental products for geological interpretation of Australia's margin.

Strengths

• Grid resolutions specified at 250, 500, and 1000 meters.
• Data integrates multiple sources including ship-track, satellite, and onshore data.
• Levelling techniques applied to correct crossover errors in ship-track data.

Limitations

• Specific row counts, column counts, and total file sizes are unknown.
• Geographic coverage is limited to Australia's marine margin.
• Data freshness is unclear beyond the platform's last updated date.

Provenance

Source

Australian Geological Survey Organisation, in cooperation with Desmond Fitzgerald and Associates and the Australian Hydrographic Service.

Collection Method

Integration and levelling of marine ship-track data merged with satellite and high-resolution onshore sources.

Freshness

Platform record last updated on 2026-04-04.

Geography

Australia's marine margin.