关键词: 磁激电法, 电激电法, 试验对比, 激电异常

Abstract: Magnetic Induced Polarization(MIP) is one kind of electrical conductivity methods,which measures magnetic field point by point rather than measuring the electric field difference between two electrodes in Electric Induced Polarization(EIP).Compared to EIP,MIP surveys have certain merits,such as:bigger detection depth,higher resolution,capable to provide useful information through highly conductive overburden and high-resistance or low-resistance cover,no need for grounding,and etc.It will be a deep exploration technology and applied to areas such as low-resistance overburden,Gobi desert,bedrocks which have been a major impediment to EIP surveys.In order to test the ability of obtaining IP anomaly in MIP surveys,we carried out a trial comparative study between MIP and EIP(Time-domain IP method and multi-frequency phase IP method included) in a mining area in China.Test results show that there is a good consistency in the IP anomaly about the two detection methods measured in the same survey lines and it will provide a basis for the further studies of MIP.In the paper the basic principles,techniques,and data processing of this method(MIP) are discussed,and the results between Magnetic Induced Polarization and Electric Induced Polarization are analyzed.

Key words: Magnetic Induced Polarization(MIP), Electric Induced Polarization(EIP), experimental contrast, anomaly of induced polarization