Little Nahanni Aeromagnetic Survey: Total Magnetic Field Grid for Yukon

Aeromagnetic survey data from the Little Nahanni region in Yukon, Canada, collected between April 12 and June 2, 2010. The Government of Yukon published a map of the total magnetic field derived from airborne measurements taken with a cesium vapour magnetometer. The data were recorded at a nominal terrain clearance of 250 meters, levelled, and interpolated to a 200-meter grid.

Use Cases

• Geological mapping based on magnetic anomaly patterns.
• Mineral exploration targeting based on subsurface magnetic structures.
• Geophysical research using high-sensitivity (0.005 nT) magnetic measurements.
• Integrating magnetic data with other regional geoscience datasets for Yukon.

Strengths

• High-sensitivity measurements recorded with a split-beam cesium vapour magnetometer (0.005 nT).
• Data were levelled and interpolated to a consistent 200-meter grid.
• Flight path was recovered using post-flight differential GPS corrections and video ground images.

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.
• Row count and exact file sizes are unknown, which may limit suitability assessment.

Provenance

Source

Government of Yukon | Gouvernement du Yukon

Collection Method

Airborne survey conducted by EON Geosciences Inc. using a Piper Navajo aircraft with a tail boom-mounted magnetometer.

Time Range

April 12, 2010 to June 2, 2010

Freshness

Last updated 2026-05-20 16:35:27.583812; freshness should be verified.

Geography

Little Nahanni region, Part of NTS 105-I (south half), Yukon, Canada