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《Journal of Jilin University(Earth Science Edition)》 2010-05
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Three-Dimension Numerical Simulation of Induced Polarization & Finite Element Method Under Complicated Terrain

LIN Jia-yong1,2,3,TANG Jing-tian1,DING Mao-bin1,YANG Xiao-hong1,YANG Shu-yun21.School of Info-physics and Geomatics Engineering,Central South University,Changsha 410083,China2.Geophysics and Geochemistry Institute,Yunnan Geology Survey Academy,Yiliang,Yunnan 652100,China3.Geophysical and Geochemical Exploration Team,Yunnan Geology and Mineral Resources Bureau,Yiliang,Yunnan 652100,China  
It often occurs that drilling according to IP anomaly missed the target.The reason is that in the actual survey,terrain changed the underground electric field,therefor changed and shifted the amplitude of IP anomaly.In order to overcome this problem,three-dimensional tetrahedral finite element numerical method is employed.We prudently selected and simulated a typical geological model.The results show that:①Undulating terrain does not produce a fake IP anomaly,only has an impact on the distribution pattern and the amplitude of IP anomaly;②The tetrahedral finite element method is feasible and effective for the IP simulation under a complicated terrain condition.
【Fund】: 国家科技支撑项目(2006BAB01A07)
【CateGory Index】: P631.3
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