First Vertical Derivative of the Magnetic Field, Eagle Plains Yukon 2009

April 10 to September 16, 2009 aeromagnetic survey data from the Eagle Plains region of Yukon, Canada. The Government of Yukon provides this processed map of the first vertical derivative of the magnetic field, collected using cesium vapour magnetometers flown at a nominal terrain clearance of 250 meters. The data were levelled, interpolated to a 200 m grid, and the International Geomagnetic Reference Field was not removed.

Use Cases

• Map subsurface geological structures based on processed magnetic field gradients.
• Support mineral exploration targeting based on magnetic anomalies in the Yukon region.
• Integrate with other geophysical datasets for regional geological interpretation based on the 200 m grid resolution.

Strengths

• Data collection used high-sensitivity split-beam cesium vapour magnetometers with a sensitivity of 0.005 nT.
• Flight parameters are precisely documented, including a nominal terrain clearance of 250 m and traverse line spacing of 800 m.
• Data processing steps are described, including flight path recovery via differential GPS and mutual levelling of flight-line magnetic data.

Limitations

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

Provenance

Source

Government of Yukon

Collection Method

Data acquired via airborne survey using magnetometers mounted on Piper Navajo and Cessna 206 aircraft.

Time Range

April 10, 2009 to September 16, 2009

Freshness

Last updated 2026-05-20 16:31:23.000574; freshness should be verified.

Geography

Eagle Plains Aeromagnetic Survey, NTS 116 G (north half), Yukon, Canada