5028 Block 3 (Northwest): Reduced Magnetic Intensity Data for Geological Mapping

Geoscience Australia Data provides reduced Total Magnetic Intensity (TMI) point-located data from the Narryer survey. The dataset consists of 415,090 line-kilometres of data acquired in 2024 by the WA Government. It has been processed with corrections for manoeuvre noise, diurnal variations, and the geomagnetic reference field.

Use Cases

• Geological mapping based on variations in the Earth's magnetic field.
• Mineral exploration targeting based on the magnetic response of subsurface rocks.
• Environmental subsurface studies based on processed magnetic intensity data.
• Geophysical research based on levelled and corrected aeromagnetic survey data.

Strengths

• Dataset contains 415,090 line-kilometres of data, indicating substantial spatial coverage.
• Data was acquired in 2024, suggesting relatively recent measurements.
• Multiple processing steps are documented, including diurnal correction and micro-levelling.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale modeling.
• Data may reflect geographic bias inherent to data_gov_au, focusing on a specific Australian region.

Provenance

Source

Geoscience Australia Data

Collection Method

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

Time Range

2024

Freshness

Last updated 2026-05-14 04:24:00.981735; freshness should be verified.

Geography

Narryer survey area, Western Australia.