Western Australia Onshore and Marine Magnetic Intensity Grid at 266m Resolution

Total magnetic intensity data for Western Australia measures variations in the Earth's magnetic field caused by rock-forming minerals. The grid has a cell size of 0.0025 degrees, approximately 266 meters, with units in nanoTesla. Geoscience Australia processed and quality-checked the data, which was acquired by the WA Government in 2005.

Use Cases

• Map subsurface geological structures based on magnetic anomaly patterns.
• Identify mineral resource potential based on magnetic susceptibility contrasts in rock.
• Integrate magnetic data with other geophysical surveys for regional geological modeling.

Strengths

• Data was quality-checked by GA geophysicists to ensure it is fit-for-purpose.
• The grid has a defined spatial resolution of 0.0025 degrees (approximately 266m).
• Covers both onshore and marine areas of Western Australia.

Limitations

• The description lacks specific metadata on data volume (line-kilometres) and acquisition parameters.
• Column-level documentation is absent; field semantics must be inferred after download.
• Data may reflect geographic and temporal bias inherent to the 2005 survey.

Provenance

Source

Geoscience Australia Data

Collection Method

Acquired via airborne or marine magnetic survey by the WA Government, processed via standard geophysical methods.

Time Range

Data acquired in 2005.

Freshness

Last updated 2026-04-30 13:20:01.313800; freshness should be verified.

Geography

Western Australia, onshore and marine areas.