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《Chinese Journal of Geophysics》 2014-12
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MCSEM 3D modeling for arbitrarily anisotropic media

YIN Chang-Chun;BEN Fang;LIU Yun-He;HUANG Wei;CAI Jing;Geo-Exploration Science and Technology Institute,Jilin University;  
Due to excellent sedimentary environment in the ocean,strong layering and stratificationscan be developed under the ocean,resulting in distinct electrical anisotropy.Traditional research on MCSEM anisotropic effects has been focused on 1D and 2D models.To deeply understand the influence of the electrical anisotropy on MCSEM responses,we study in this paper 3D marine CSEM modeling for an arbitrarily anisotropic earth.We utilize the staggered finite-difference algorithm,combined with volume average and volume current average method for handling the conductivity tensor elements,accomplish successfully 3D MCSEM modeling for an arbitrarily anisotropic earth.Through analyses and comparison of the MCSEM responses for isotropic and different anisotropic cases,we demonstrate the characteristics related to the influence of the electrical anisotropy on MCSEM responses and identification technique from the MCSEM survey for the electrical anisotropy of the media under the ocean.The algorithm and results from the numerical experiments in this paper offer the technical support to the detailed interpretation of the MCSEM data.
【Fund】: 国家高技术研究发展计划(2012AA09A20103);; 国家自然科学基金项目(41404093 41404057);; 吉林大学研究生创新基金资助项目(2014099)联合资助
【CateGory Index】: P631.325
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China Proceedings of conference Full-text Database 1 Hits
1 FU Chang-Min,DI Qing-Yun,WANG Miao-Yue Key Laboratory of Engineering Geomechanics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;Calculate electromagnetic fields in stratified medium with layer-matrix method[A];[C];2011
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