Gravity and Magnetic Data for Southwest Australia, Integrated from 150+ Surveys

In 2008 and 2009, Geoscience Australia conducted marine geophysical surveys GA-310 and GA-2476, acquiring about 26,000 line km of new gravity and magnetic data. This data was integrated with existing data from around 150 previous surveys conducted since 1960 to produce a unified dataset. The record describes the levelling process used to minimize errors for interpreting regional tectonics and petroleum prospectivity.

Use Cases

• Model regional tectonic structures based on integrated gravity and magnetic measurements.
• Assess petroleum prospectivity in offshore basins based on pre-competitive geophysical data.
• Conduct geological interpretation of the southwest Australian margin based on levelled potential-field data.
• Analyze basin structure using a unified dataset combining marine and land measurements.

Strengths

• Integrates about 26,000 line km of new data with legacy data from around 150 previous surveys.
• Describes a specific levelling process to minimize cross-over errors for improved interpretability.
• Covers both offshore and onshore areas of the southwest margin of Australia.

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/source bias inherent to data_gov_au.

Provenance

Source

Geoscience Australia, Australian Ocean Data Network

Collection Method

Marine geophysical surveys (GA-310 and GA-2476) acquiring seismic reflection, gravity, magnetic, and swath bathymetry measurements.

Time Range

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

Freshness

Last updated 2026-04-10 17:36:34.834266; freshness should be verified.

Geography

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