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《Progress in Geophysics》 2014-05
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The influence of the MT response for magneticsability parameters

LIU Ying-dong;TAN Han-dong;Song Wen-jie;Institute of Multipurpose Utilization of Mineral Resources,Chinese Academy of Geological Sciences;China University of Geosciences;Shandong Institute of Earthquake Engineering;  
Conventional magnetotelluric data processing method is generally assumed that the underground medium is nonmagnetic,but susceptibility is also an important parameter of rock and minerals.In this paper,we use finite element method to simulate the two-dimensional magnetotelluric forward as an example,analyzing the influence of permeability parameters on the response of different geological model.The results showed that: the magnetotelluric data includes susceptibility parameters where a magnetic geology body underground,the magnitude of this effect increases with magnetic susceptibility increases. By comparing different models shows that the TM mode forward response was stronger than TE mode in the variations of susceptibility,the high resistivity body is more sensitive than the low one.There is provide a new approach to apply MT data effectively and reduce the geophysical multiple solutions problem in magnetic geological areas by the study of forward and inversion upon the susceptibility parameters.
【Fund】: 中国国家地质调查项目(12120113048600)资助
【CateGory Index】: P631.325
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