Depth to Magnetisation Estimations from Total Magnetic Intensity Flightline Data

A pilot web-based utility developed by Geoscience Australia and CSIRO for estimating depth to magnetisation. The tool performs live inversions of Geophysical Archive Data Delivery System data using horizontal-top tabular models on user-selected magnetic anomalies. The work was presented at the 2025 Australasian Exploration Geoscience Conference.

Use Cases

• Estimating depth to geological structures based on Total Magnetic Intensity anomalies.
• Inverting magnetic data using horizontal-top tabular models for subsurface modeling.
• Analyzing prominent, simple, and isolated magnetic anomalies ('sweet-spots') for exploration targeting.

Strengths

• Developed by Geoscience Australia and CSIRO, indicating institutional authority.
• Uses raw Total Magnetic Intensity flightline data to avoid smoothing artifacts from gridding.
• Allows user interaction by locking or freeing parameters during the iterative inversion process.

Limitations

• Dataset size, row count, and specific column definitions are unknown.
• The primary output format is PDF, which may limit direct machine-readability of the underlying data.
• Data freshness should be verified as the last metadata update was 2026-05-19.

Provenance

Source

Geoscience Australia Data

Collection Method

Inversion of Geophysical Archive Data Delivery System (GADDS) Total Magnetic Intensity flightline data.

Freshness

Last updated 2026-05-19 22:37:45.301289