HR: 0800h
AN: NS31A-0149    [Abstracts]
TI: New Generation of High Sensitivity Airborne Potassium Magnetometers for Mineral Exploration Applications
AU: * Hrvoic, I
EM: info@gemsys.ca
AB: In the 90's, GEM developed a Potassium magnetometer system that met many of the requirements for "high detail mapping", including high sensitivity, absolute accuracy and minimal orientation errors. Now, this work has been extended with the development of a new Potassium magnetometer / gradiometer for very high sensitivity operation. This paper consists of a short review of two key types of quantum magnetometers (Overhauser and Optically Pumped) – focusing on the development and field testing of a new Potassium system. The new technology provides several advantages over standard optically pumped systems, including high sensitivity, gradient tolerance and bandwidth; "clean" geophysical signal: high speed of operation, high absolute accuracy; ability to combine magnetometer and EM system. Case history data are also provided. Processing methods include corrections, filtering, and gridding. Final conclusions relate these results to the targets shown in original site design records.
DE: 0925 Magnetic and electrical methods (5109)
DE: 0994 Instruments and techniques
SC: Near-Surface Geophysics [NS]
MN: 2007 Fall Meeting