Airborne Geophysical Instrumentation for Fast Geological Reconnaissance

Airborn e geophysical survey is the latest technique for quick geological demarcation of the subsurface of the earth. This is specially true when the area under survey contains different terrains and dense forestation with heavy wildlife. Although in the western countries, the technique made a beginning in the early sixties, in India, the technique came in vogue around the late sixties. The methodology involves using a special aircraft carrying intricate sensor equipment and navigational aids for necessary[1]position location. In India, such technique was first undertaken in 1967 by the Geological Survey of India under the Indo-US Scientific Programme for a few selected areas in the country. This was followed by another similar programme under Indo-French Contract which covered some other selected areas in the country. By the eighties, the Geological Survey of India acquired its own special aircraft fitted with the complete range of equipment and aids ending the era of dependence in this field of scientific survey.