GA310 South West Margin: Offshore Magnetic Survey Data

26,000 line-kilometres of Total Magnetic Intensity (TMI) data were acquired for Geoscience Australia in 2008/2009. This processed data measures variations in the Earth's magnetic field to reveal sub-surface geological structure. The data underwent quality checks by GA geophysicists to ensure it is fit-for-purpose.

Use Cases

• Modeling sub-surface geological structure based on magnetic anomaly patterns.
• Identifying rock types and mineral content based on magnetic susceptibility contrasts.
• Integrating magnetic data with seismic reflection and gravity measurements for comprehensive geological analysis.
• Supporting offshore energy security assessments through pre-competitive geophysical data.

Strengths

• 26,000 line-kilometres of magnetic and gravity data provide substantial spatial coverage.
• Data underwent standard processing and quality checks by GA geophysicists.
• Acquired as part of a government program, suggesting a structured, systematic survey.

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 bias inherent to the specific offshore survey area.

Provenance

Source

Australian Ocean Data Network

Collection Method

Acquired via marine survey as part of the Australian Government's Offshore Energy Security Program.

Time Range

2008/2009

Freshness

Last updated 2026-05-05 05:11:10.799868; freshness should be verified.

Geography

South West Margin (offshore Australia)