Combined Marine and Land Gravity and Magnetic Data for Southwest Australia

Southwest Australia's offshore margin is covered by this integrated gravity and magnetic dataset. Geoscience Australia produced it by leveling and combining about 26,000 line km of new survey data with historical data from around 150 previous marine surveys. The data underpinned the 2010-2011 exploration acreage release in the Perth, Mentelle, and Southern Carnarvon basins.

Use Cases

• Modeling regional tectonics based on integrated gravity and magnetic data.
• Assessing basin structure and petroleum prospectivity based on pre-competitive geophysical measurements.
• Constraining geological interpretations based on leveled ship-borne gravity and magnetic data.
• Analyzing offshore energy security based on marine survey data from the Australian Government's program.

Strengths

• Integrates about 26,000 line km of new gravity and magnetic data.
• Combines new surveys with historical data from around 150 previous marine surveys.
• Data has been leveled to minimize mistie errors at ship-track cross-overs.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia Data

Collection Method

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

Time Range

Surveys conducted in late 2008 and early 2009; historical data dates back to 1960.

Freshness

Last updated 2026-05-14 09:20:09.668173; freshness should be verified.

Geography

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