GA310 South West Margin: Marine Magnetic Survey Line Data

26,000 line-kilometres of total magnetic intensity (TMI) data were acquired for Geoscience Australia in 2008/2009. The processed data measures variations in the Earth's magnetic field to reveal geological structures beneath the seafloor. Quality checks were performed by GA geophysicists to ensure the data is fit-for-purpose.

Use Cases

• Interpret geological structure of the sub-surface based on processed magnetic intensity data
• Analyze rock susceptibility contrasts based on positive or negative magnetic anomalies
• Integrate with other survey data (seismic, gravity, bathymetry) for comprehensive offshore geological models

Strengths

• 26,000 line-kilometres of magnetic and gravity data acquired
• Data processed via standard methods to isolate the response from rocks in the ground
• Quality checked by GA geophysicists to ensure fit-for-purpose

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 marine survey area

Provenance

Source

Australian Ocean Data Network

Collection Method

Acquired as part of the Australian Government's Offshore Energy Security Program

Time Range

2008/2009

Freshness

Last updated 2026-04-16 14:56:02.095893; freshness should be verified

Geography

South West Margin (offshore Australia)