5028 Block 4 (Northeast) Grid of Total Magnetic Intensity (TMI) with standard reductions a

415,090 line-kilometres of magnetic survey data acquired in 2024 by the WA Government. This grid of Total Magnetic Intensity (TMI) data, processed with standard reductions, has a cell size of approximately 20 meters and units in nanoTesla (nT). The data is quality-checked by Geoscience Australia geophysicists to be fit-for-purpose for revealing sub-surface geological structure.

Use Cases

• Map geological structures based on magnetic anomalies described in the data.
• Identify mineral exploration targets based on variations in the Earth's magnetic field intensity.
• Integrate with other geophysical datasets for regional geological interpretation based on the processed TMI grid.

Strengths

• 415,090 line-kilometres of survey data provides extensive aerial coverage.
• Data is quality-checked by GA geophysicists to be fit-for-purpose.
• Grid cell size of approximately 20 meters suggests a relatively high resolution.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The specific license terms are unknown, which may restrict usage.
• Data may reflect geographic bias inherent to data_gov_au, focusing on a specific block in Australia.

Provenance

Source

Geoscience Australia Data

Collection Method

Acquired via airborne magnetic survey at 100m line spacing and 50m terrain clearance.

Time Range

2024

Freshness

Last updated 2026-05-14 03:50:51.511088

Geography

5028 Block 4 (Northeast), likely in Western Australia, Australia.