5028 Block 3 (Northwest): Raw-Edited Magnetic Point Data from Narryer Survey

Total Magnetic Intensity (TMI) point-located data measures variations in the Earth's magnetic field. This line dataset from the Narryer survey in Western Australia was acquired in 2024 by the WA Government and consists of 415,090 line-kilometres of data. The raw edited data includes measurements such as raw TMI, compensated TMI, diurnal, fluxgate magnetometer, raw altimeter heights, and ellipsoidal GNSS heights.

Use Cases

• Geological mapping based on magnetic field variations from crustal rocks.
• Mineral exploration targeting based on Total Magnetic Intensity (TMI) anomalies.
• Environmental subsurface studies using detailed magnetic point-located data.
• Correcting magnetic survey data for diurnal variations using the included diurnal measurements.

Strengths

• Dataset contains 415,090 line-kilometres of data, indicating a large-scale survey.
• Data includes multiple measurement types such as raw TMI, compensated TMI, diurnal, and GNSS heights.
• Acquired at a defined 100m line spacing and 50m terrain clearance, suggesting systematic collection.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Geoscience Australia Data

Collection Method

Acquired via airborne magnetic survey.

Time Range

2024

Freshness

Last updated 2026-05-26 19:25:15.221122; freshness should be verified.

Geography

Narryer survey area, Western Australia, Australia.