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Three-dimensional magnetotelluric modeling in anisotropic media using edge-based finite element method TEXT SIZE: A A A
It is important to understand how magnetotelluric (MT) modeling can most effectively be performed in general anisotropic media. However, previous studies in this area have mainly focused on the use of one-dimensional (1D) and two-dimensional (2D) algorithms. Thus, building on earlier work, it is important to study the performance of three-dimensional (3D) modeling in arbitrary conductivity media; therefore, an edge-based finite element (FE) method has been developed for 3D MT modeling in arbitrary conductivity media. This approach is based on the initial derivation of a series of equivalent variational equations that are based on Maxwell equations, generated using the weighted residual method. Specific values were then obtained for coefficient matrixes of this edge -based FE method using hexahedral meshes, and the algorithm was verified by comparing its results with finite difference (FD) solutions generated using a 2D anisotropic model. Finally, the results of a 3D anisotropic model were analyzed detailed for three conditions; another 3D anisotropic model was designed and its results were compared with two isotropic models'. (C) 2017 Elsevier B.V. All rights reserved.
 

Publication name

 JOURNAL OF APPLIED GEOPHYSICS, 149 1-9; 10.1016/j.jappgeo.2017.12.009 FEB 2018

Author(s)

 Xiao, Tiaojie; Liu, Yun; Wang, Yun; Fu, Li-Yun

Corresponding author(s) 

 XIAO Tiaojie 
 1052170058@qq.com  
 -Chinese Acad Sci, Inst Geochem, Guiyang 550002, Guizhou, Peoples R China
 -Univ Chinese Acad Sci, Beijing 100049, Peoples R China 

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