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First vertical derivative of the magnetic field, Little Nahanni Aeromagnetic Survey, Part of NTS 105-P, Yukon

This map of the first vertical derivative of the magnetic field was derived from data acquired during an aeromagnetic survey carried out by EON Geosciences Inc. during the period between April 12, 2010 to June 2, 2010. The data were recorded using a split-beam cesium vapour magnetometer (sensitivity = 0.005 nT) mounted in the tail boom of a Piper Navajo aircraft. The nominal traverse and control line spacings were, respectively, 800 m and 2 400 m, and the aircraft flew at a nominal terrain clearance of 250 m. Traverse lines were oriented N45?E with orthogonal control lines. The flight path was recovered following post-flight differential corrections to the raw Global Positioning System data and inspection of ground images recorded by a vertically-mounted video camera. The survey was flown on a pre-determined flight surface to minimize differences in magnetic values at the intersections of control and traverse lines. These differences were computer-analysed to obtain a mutually levelled set of flight-line magnetic data.
The levelled values were then interpolated to a 200 m grid. The International Geomagnetic Reference Field (IGRF) was not removed from the magnetic field.

Data and Resources

FieldValue
Publisher
Modified
2021-06-07
Release Date
2019-05-10
Frequency
Irregularly
Homepage URL
Temporal Coverage
Wednesday, December 31, 1969 - 16:00
Licence
Public Access Level
Public
Department
Energy, Mines and Resources
Publication type
Additional Info: 
FieldValue

Document Type

Open File (Geophysical)

NTS

105P04, 105P05, 105P12

Year Published

2010

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