Integrated Gravity and Magnetic Data for Southwest Australia Margin

Geoscience Australia conducted marine surveys GA-310 and GA-2476 in 2008-2009, acquiring about 26,000 line km of new gravity and magnetic data. This record describes the integration and levelling of this new data with approximately 150 previous surveys since 1960 to create a unified dataset. The processed data is intended for constraining regional tectonics, basin structure, and petroleum prospectivity.

Use Cases

• Model regional tectonic structures based on integrated gravity and magnetic data.
• Assess petroleum prospectivity in offshore basins based on processed potential-field data.
• Conduct geological interpretation using levelled data to minimize cross-over artefacts.
• Analyze basin structure off the southwest margin of Australia based on marine survey data.

Strengths

• Integrates about 26,000 line km of new survey data with data from around 150 historical surveys.
• Data has undergone levelling to minimize mistie errors from instrument drift and positioning.
• Covers a specific geographic region: the Perth, Mentelle, and Southern Carnarvon basins.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic/temporal bias inherent to data_gov_au.

Provenance

Source

Geoscience Australia, Australian Ocean Data Network

Collection Method

Acquired via marine geophysical surveys GA-310 and GA 2476, then integrated and levelled with historical data.

Time Range

Survey data from 2008-2009, integrated with historical data since 1960.

Freshness

Last updated 2026-05-05 00:04:55.315416; freshness should be verified.

Geography

Southwest margin of Australia, covering the Perth, Mentelle, and Southern Carnarvon basins.