First vertical derivative of the magnetic field, Aeromagnetic Survey of the Nisling River

A high-sensitivity aeromagnetic survey collected 37,999 line kilometres of magnetic data over the Nisling River area in Yukon. Goldak Airborne Surveys conducted the work for the Geological Survey of Canada between January 25th and March 26th, 2011. Traverse lines were flown at a 400 m spacing with a nominal terrain clearance of 100 meters.

Use Cases

• Map subsurface geological structures based on processed magnetic field derivatives.
• Identify potential mineral deposits based on magnetic anomaly patterns.
• Integrate magnetic data with other geophysical surveys for regional geological interpretation.
• Calibrate ground-based magnetometer readings using the high-resolution airborne data.

Strengths

• High-resolution data collection covering 37,999 line kilometres.
• Survey conducted with three cesium vapour magnetometers and differential GPS for precision.
• Specific flight parameters documented, including 400 m line spacing and 100 m terrain clearance.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data freshness should be verified despite the 2026 metadata update date.

Provenance

Source

Goldak Airborne Surveys on behalf of the Geological Survey of Canada.

Collection Method

Airborne survey using cesium vapour magnetometers, GPS, and altimeters.

Time Range

January 25th to March 26th, 2011.

Freshness

Last updated 2026-05-20 16:07:26.904744

Geography

Nisling River Area, NTS 115 G/15 and part of 115 G/14, Yukon, Canada.