Total Magnetic Intensity of Western Australia at 20-Metre Resolution

GSWA has generated magnetic anomaly grid compilations at 80, 40 and 20 metres in cell size. The grids merge data from Federal and State Government datasets, acquired with a line spacing of 500 metres or less, and from more than 1600 open file company datasets. The Geoscience Australia magnetic grid of Australia V6 2015 is used as a base reference grid and to fill background areas.

Use Cases

• Identify subsurface geological structures based on magnetic anomaly patterns.
• Support mineral exploration targeting by mapping magnetic signatures of ore deposits.
• Create regional geological maps by integrating magnetic data with other geophysical surveys.
• Calibrate airborne or ground-based magnetic survey data using the compiled reference grid.

Strengths

• Integrates data from more than 1600 open file company datasets, suggesting broad source coverage.
• Provides high-resolution grids at 20, 40, and 80 metre cell sizes.
• Uses the Geoscience Australia magnetic grid of Australia V6 2015 as a base reference for consistency.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and dataset size are unknown, which may limit suitability assessment.
• Data may reflect geographic or source bias inherent to the contributing surveys.

Provenance

Source

Department of Energy, Mines, Industry Regulation and Safety (Chief Geophysicist)

Collection Method

Merged grids from Federal and State Government datasets and over 1600 open file company datasets.

Freshness

Last updated 2026-06-02 10:44:35.058559; freshness should be verified.

Geography

Western Australia, Australia