GA310 South West Margin: Marine Magnetic Line Data

26,000 line-kilometres of total magnetic intensity data were acquired in 2008/2009 as part of Australia's Offshore Energy Security Program. This processed line dataset reveals subsurface geological structures by measuring variations in Earth's magnetic field intensity caused by rock-forming minerals. Geoscience Australia geophysicists have quality-checked the data, which supports pre-competitive analysis for resource exploration.

Use Cases

• Mapping subsurface geological structures based on magnetic anomaly patterns.
• Supporting mineral and hydrocarbon exploration in offshore basins.
• Integrating with seismic and gravity data for multi-physics geological models.
• Calibrating regional magnetic field models for the South West Margin region.

Strengths

• Data volume is precisely quantified at 26,000 line-kilometres.
• Underwent quality assurance checks by Geoscience Australia geophysicists.
• Acquired as part of a coordinated government program with multiple geophysical measurements.

Limitations

• Column names and data structure are not specified in the available metadata.
• Exact row count, file size, and specific license terms are unknown.
• Data is from a single survey campaign (2008/2009), limiting temporal analysis.

Provenance

Source

Geoscience Australia

Collection Method

Acquired via shipborne marine survey (GA310 South West Margin 2D MSS).

Time Range

2008-2009

Freshness

Metadata was last updated on 2026-04-30, though the underlying data is from 2008/2009.

Geography

South West Margin, offshore Australia