Development of a tri-directional helicopter gradiometer for mineral exploration applications

摘要

In this paper, we introduced an enhanced system for measuring tri-directional gradients (vertical, horizontal across and horizontal along track) using state-of-the-art potassium sensors for higher sensitivity, reduced noise, high absolute accuracy, and high speed surveys. The tri-directional gradiometer is an advanced magnetic system with many advantages characteristic to multi-sensor surveys, including freedom from diurnal effects and noise, altitude correction of total field magnetics, improved magnetic mapping and enhanced interpretation. Future directions will be to assist companies and organizations in adopting this new technology and to help enhance current exploration approaches. Additional information on airborne magnetics applications can be found at www.gemsys.ca/apps_airborne.htm.