Little Nahanni Aeromagnetic Survey: Total Magnetic Field Grid for Yukon

A 200-meter grid of the total magnetic field derived from an aeromagnetic survey flown between April 12, 2010 and June 2, 2010. EON Geosciences Inc. collected the data using a cesium vapour magnetometer mounted on a Piper Navajo aircraft flying at a nominal 250-meter terrain clearance. The Government of Yukon provides this data, which has not been corrected for the International Geomagnetic Reference Field (IGRF).

Use Cases

• Map subsurface geological structures based on magnetic field anomalies.
• Support mineral exploration targeting based on magnetic signatures.
• Integrate with other geophysical datasets for regional geological modeling.
• Study magnetic field variations in a northern Canadian region.

Strengths

• Data was collected with a high-sensitivity magnetometer (0.005 nT).
• Flight lines were computer-analyzed and mutually levelled to minimize intersection errors.
• Survey parameters are well-documented, including 800 m traverse line spacing and 250 m nominal terrain clearance.

Limitations

• The International Geomagnetic Reference Field (IGRF) was not removed from the magnetic field values.
• Column-level documentation is absent; field semantics must be inferred after download.
• Data scale (row count) is unknown, which may limit suitability assessment.

Provenance

Source

Government of Yukon | Gouvernement du Yukon

Collection Method

Aeromagnetic survey using a split-beam cesium vapour magnetometer mounted on a Piper Navajo aircraft.

Time Range

April 12, 2010 to June 2, 2010

Freshness

Last updated 2026-05-20 16:03:33.470955; freshness should be verified.

Geography

Little Nahanni area, Part of NTS 105-P, Yukon, Canada