Potential Field and Bathymetry Grids for Australia's Marine Margin

Australia's continental margin is covered by a set of digital grids for bathymetry, gravity, and magnetic data at 250-1000 meter resolution. This dataset represents a major upgrade of marine ship-track data, integrated with satellite and onshore sources and corrected using levelling techniques. It is intended as a fundamental product for geological interpretation of Australian waters.

Use Cases

• Basin analysis and tectonic interpretation based on integrated gravity and magnetic anomaly maps.
• Seafloor morphology and habitat mapping using the high-resolution bathymetry grid.
• Resource prospectivity assessment for minerals and hydrocarbons leveraging the potential field data.
• Marine spatial planning and environmental studies informed by the detailed geophysical and bathymetric models.

Strengths

• Integrates data from multiple sources, including ship-track, satellite, and high-resolution onshore data.
• Applies levelling techniques to correct crossover and other errors in the source data.
• Provides a major upgrade of marine potential field and bathymetry data for Australian waters.

Limitations

• Key metadata is missing, including specific row/column counts, file size, data license, and author details.
• The last update date is inconsistent across platform entries (2026-04-30 vs. 2026-04-20).
• The exact column structure and data formats beyond 'HTML' are not described.

Provenance

Source

Geoscience Australia, 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 onshore sources.

Time Range

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Freshness

2026-04-30 14:09:12.224488

Geography

Australia's continental margin (Australian waters).