Abstract
The art of prospecting by electromagnetic (EM) methods has progressed so rapidly in the last decade that it would seem timely for the publication of a review on this field of activity. Airborne EM surveys have been conducted on a world‐wide basis for quite a number of years, and they are now accepted as a standard and proven exploration tool. Unlike, however, the field of airborne magnetics which has received a great deal of attention in publications in many technical journals, the airborne EM method has scarecely been touched upon, publication‐wise. A few papers have been presented in the past on specific types of EM prospecting instruments and methods, but to the writer’s knowledge, no attempt as yet has been made to incorporate all the various techniques and EM instruments in one article. This review is therefore primarily an attempt to set down for the reader a short history of airborne EM development, along with some details on each of the different types of EM systems or instruments which have flown in the past or are presently flying today.
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