Western Australia Magnetic Intensity Grid at 0.0025-Degree Resolution

Total magnetic intensity (TMI) data measures variations in the Earth's magnetic field caused by rock-forming minerals in the crust. This geodetic grid covers Western Australia's onshore and marine areas with a cell size of 0.0025 degrees and units in nanoTesla. The data was acquired in 2005 by the WA Government and processed by Geoscience Australia.

Use Cases

• Map subsurface geological structures based on magnetic anomaly patterns.
• Identify areas of mineral potential based on magnetic susceptibility contrasts.
• Integrate magnetic data with other geophysical surveys for regional geological modeling.
• Calibrate or validate airborne magnetic survey processing methods.

Strengths

• Data processed via standard methods to isolate the magnetic response of subsurface rocks.
• Final data quality-checked by Geoscience Australia geophysicists to be fit-for-purpose.
• Grid provides consistent coverage of Western Australia's onshore and marine areas.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The acquisition details for line-kilometres, line spacing, and terrain clearance are listed as 'None'.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia Data

Collection Method

Acquired by the WA Government in 2005, processed via standard geophysical methods.

Time Range

2005

Freshness

Last updated 2026-04-20 01:32:00.182039; freshness should be verified.

Geography

Western Australia (onshore and marine areas)