THE REASON FOR THE SOMEWHAT LOWER TEM OBSERVATION RESISTIVITY IN NEAR-REGION OF MAGNETIC SOURCE
WANG Qing-yi1, JIANG Bin2, XU Li-zhong2
1. Beijing Institute of Geology for Mineral Resources, Beijing 100012, China;
2. Zhongsedike Mineral Resources Exploration Co., Ltd., Beijing 100012, China
Abstract:This paper discusses the reason why the TEM observation resistivity is lower or much lower than actual resistivity. It is caused by the additional effect of the electric field coupling between the transmit coil and the receiving coil during the time of power supply. This effect becomes a strong background values in the measurement of the transient potential. This paper gives the method and measures for eliminating (or weakening) this field interference.
王庆乙, 蒋彬, 徐立忠. 磁性源近区瞬变电磁法电阻率偏低的原因[J]. 物探与化探, 2012, 36(3): 392-395.
WANG Qing-yi, JIANG Bin, XU Li-zhong. THE REASON FOR THE SOMEWHAT LOWER TEM OBSERVATION RESISTIVITY IN NEAR-REGION OF MAGNETIC SOURCE. Geophysical and Geochemical Exploration, 2012, 36(3): 392-395.