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Magnetotelluric responses of three-dimensional conductive and magnetic anisotropic anomalies
Xiao, Tiaojie1,2,3; Wang, Yun2,3; Huang, Xiangyu4; He, Guoli5; Liu, Jie1
2019-11-14
Source PublicationGEOPHYSICAL PROSPECTING
ISSN0016-8025
Pages25
AbstractA magnetotelluric finite-element modelling algorithm is developed, which is capable of handling three-dimensional conductive and magnetic anisotropic anomalies. Different from earlier three-dimensional magnetotelluric anisotropic modelling methods, the algorithm we presented has taken the magnetic anisotropy into consideration. The variational equations are produced by the Galerkin method and the governing equations are solved using a hexahedral vector edge finite-element method. The accuracy of this algorithm is firstly validated by comparing its solutions with the results of finite-difference method for a three-dimensional conductive arbitrary anisotropic model, and then validated by comparing with analytical solutions for a one-dimensional magnetic model. The responses of four kinds of models under different conditions are studied, and some conclusions are obtained. It shows that for materials with a high magnetic permeability, its influence on magnetotelluric responses cannot be ignored in some circumstances. Especially, if the magnetic susceptibility is exceptionally high, it may really distort the apparent resistivities of lower resistive anomalies. These conclusions are also beneficial for magnetotelluric survey.
Keyword3D modelling Conductivity anisotropy Finite-element method Magnetotelluric Magnetic anisotropy
DOI10.1111/1365-2478.12886
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS KeywordFINITE-ELEMENT ; ELECTRICAL ANISOTROPY ; ELECTROMAGNETIC INDUCTION ; STRATIFIED EARTH ; FIELDS ; INVERSION ; MT ; SUSCEPTIBILITY ; EXPLORATION ; FORMULATION
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YEB0202104] ; National Key Research and Development Project of China[2016YFC0600301] ; National Natural Science Foundation of China[41425017]
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000496231700001
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95743
Collection页岩气与地质工程院重点实验室
Corresponding AuthorXiao, Tiaojie
Affiliation1.Natl Univ Def Technol, Sci & Technol Parallel & Distributed Proc Lab, Changsha 410073, Hunan, Peoples R China
2.Chinese Acad Sci, Inst Geochem, State Key Lab Ore Deposit Geochem, Guiyang 550002, Guizhou, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Cent S Univ, Sch Geosci & Infophys, Changsha 410083, Hunan, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 10029, Peoples R China
Recommended Citation
GB/T 7714
Xiao, Tiaojie,Wang, Yun,Huang, Xiangyu,et al. Magnetotelluric responses of three-dimensional conductive and magnetic anisotropic anomalies[J]. GEOPHYSICAL PROSPECTING,2019:25.
APA Xiao, Tiaojie,Wang, Yun,Huang, Xiangyu,He, Guoli,&Liu, Jie.(2019).Magnetotelluric responses of three-dimensional conductive and magnetic anisotropic anomalies.GEOPHYSICAL PROSPECTING,25.
MLA Xiao, Tiaojie,et al."Magnetotelluric responses of three-dimensional conductive and magnetic anisotropic anomalies".GEOPHYSICAL PROSPECTING (2019):25.
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