SUMMARY

Aeromagnetic comprensation in airborne magnetic survey

Kiều Trung Thủy, Vũ Tuấn Hùng,
Nguyễn Tuấn Năm, Trương Công Ánh.

Aeromagnetic compensation is necessary in airborne magnetic survey. Airborne geophysical survey companies in the world has focused on manufacturing equipments, airborne technique methods aiming to reduce maximally the influence of secondary field of the plane to measuring results. Now, sensitivity of the device measuring airborne magnetic is less than 0.01 nT. This require corresponds with the development of magnetic field compensation technology. The development of GPS technology has made the method more active in support tools. Today, measuring and recording equipments and equipments of the magnetic field compensation, GPS device and method of implementation techniques are widely used that reduces the influence of secondary field of the plane to measuring results which can be less than 1 nT. This has important implications for airborne magnetic survey with high-quality and must be applied widely in prospecting of low magnetic minerals, oil and gas. In Việt Nam, the magnetic field compensation in airborne magnetic survey has been applied many years ago, that makes the airborne magnetic data becoming more accurate and the method more efficient.

Người biên tập: TS. Nguyễn Tuấn Phong.