Eagle Plains Aeromagnetic Survey: First Vertical Derivative Map, Yukon 2009

A 2009 aeromagnetic survey flown at 250 m terrain clearance over the Eagle Plains region of Yukon, Canada, produced this map of the first vertical derivative of the magnetic field. Data were collected using cesium vapour magnetometers with 0.005 nT sensitivity from two aircraft flying 800 m traverse lines. The Government of Yukon provides the levelled and gridded data where the International Geomagnetic Reference Field was not removed.

Use Cases

• Identify subsurface geological structures based on magnetic field gradients.
• Map regional magnetic anomalies for mineral exploration targeting.
• Integrate with other geophysical datasets for geological interpretation of the Eagle Plains area.
• Assess data processing techniques for aeromagnetic surveys flown with tight terrain clearance.

Strengths

• High-resolution data collection with a nominal terrain clearance of 250 meters and line spacing of 800 meters.
• Precise instrumentation using split-beam cesium vapour magnetometers with a sensitivity of 0.005 nT.
• Flight path was recovered using post-flight differential GPS corrections and video ground imagery.

Limitations

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

Provenance

Source

Government of Yukon | Gouvernement du Yukon

Collection Method

Aeromagnetic survey conducted by EON Geosciences Inc. using aircraft-mounted magnetometers.

Time Range

Survey conducted between April 10, 2009 and September 16, 2009.

Freshness

Last updated 2026-06-03 15:34:11.256869; freshness should be verified.

Geography

Eagle Plains Aeromagnetic Survey, NTS 116-I (north half), Yukon, Canada.