Little Nahanni Aeromagnetic Survey: First Vertical Derivative of the Magnetic Field, Yukon

Yukon, Canada, is the geographic scope of this aeromagnetic survey map. The data were acquired between April 12, 2010 and June 2, 2010 by EON Geosciences Inc. using a cesium vapour magnetometer flown at a nominal terrain clearance of 250 m, with traverse lines spaced 800 m apart and oriented N45°E.

Use Cases

• Map subsurface geological structures based on the first vertical derivative of the magnetic field.
• Analyze magnetic anomalies for mineral exploration based on high-resolution aeromagnetic survey data.
• Model regional geology based on data collected with a 0.005 nT sensitivity magnetometer.
• Study magnetic field variations based on data interpolated to a 200 m grid.

Strengths

• Data acquired with a high-sensitivity instrument (0.005 nT) mounted in an aircraft.
• Survey conducted with specific flight parameters: 250 m terrain clearance, 800 m traverse line spacing.
• Flight path was recovered using post-flight differential GPS corrections and video inspection.

Limitations

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

Provenance

Source

Government of 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 16:06:31.626727; freshness should be verified

Geography

Little Nahanni area, Part of NTS 105-I (north half), Yukon, Canada