Australia's southwest margin, including the Perth, Mentelle, and Southern Carnarvon basins, is covered by gravity and magnetic data. Geoscience Australia integrated about 26,000 line km of new survey data with existing data from around 150 previous surveys since 1960. This unified dataset was produced to constrain regional tectonics, basin structure, and petroleum prospectivity.
Use Cases
- Model regional tectonics based on integrated gravity and magnetic data.
- Analyze basin structure for petroleum prospectivity based on levelled geophysical data.
- Study ship-borne gravity and magnetic data artifacts minimized through levelling.
- Integrate marine and onshore geophysical data for geological interpretation.
Strengths
- Includes about 26,000 line km of new gravity and magnetic data.
- Integrates data from around 150 previous marine surveys conducted since 1960.
- Data has been levelled to minimize mistie errors from instrument drift and positioning.
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
- Australian Ocean Data Network
- Collection Method
- Integration and levelling of new marine survey data (GA-310 and GA-2476) with existing offshore and onshore data.
- Time Range
- New surveys conducted in late 2008 and early 2009; historical data since 1960.
- Freshness
- Last updated 2026-04-16 16:27:31.220099; freshness should be verified.
- Geography
- Perth, Mentelle, and Southern Carnarvon basins off the southwest margin of Australia.