Journal of Jilin University(Earth Science Edition) ›› 2020, Vol. 50 ›› Issue (6): 1887-1896.doi: 10.13278/j.cnki.jjuese.20190167

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Anisotropy Forward Modeling of Magnetotelluric(MT) Adaptive Finite Element

Feng Kai1, Qin Ce2   

  1. 1. Institute of Geophysical Instruments, Xi'an Research Insititute, China Coal Technology and Engineering Group, Xi'an 710077, China;
    2. Institute of Physics and Electronic Information, Henan University of Technology, Jiaozuo 454000, Henan, China
  • Received:2019-08-22 Published:2020-12-11
  • Supported by:
    Supported by Youth Program of National Natural Science Foundation of China (41904078)

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Abstract: Electrical anisotropy is ubiquitous in nature, especially in some sedimentary basins, where some rock layers underwent compaction and metamorphism,showing a strong anisotropic conductivity,on which a positive and negative interpretation is more reasonable and accurate. The forward calculation of magnetotelluric anisotropy by adaptive finite element method was used to simulate the response of horizontal, vertical and oblique anisotropic media at different deflection angles and spindle resistivity in this study. The results show that the adaptive finite element can obtain a reasonable mesh under the control of the posterior error, and make the calculation result closer to the analytical solution; In anisotropic media, the apparent resistivity and impedance phase of the magnetotelluric TE polarization mode is independent of the resistivity perpendicular to the plane; In a two-dimensional anisotropic structure, the magnetotelluric TM polarization mode response is always determined by the resistivity component on the spindle in the y-axis direction.

Key words: magnetotelluric, anisotropy, adaptive finite element method, electrical spindl

CLC Number: 

  • P631.3
[1] 秦林江. 各向异性介质的MT正反演研究[D]. 杭州:浙江大学, 2013. Qin Linjiang. Research on MT Forward and Inversion for Anisotropic Media[D]. Hangzhou:Zhejiang University, 2013.
[2] 王堃鹏. 基于MPI的海洋可控源电磁法自适应有限元2.5D正演研究[D]. 成都:成都理工大学,2014. Wang Kunpeng. Research on 2.5D Forward Modeling of Adaptive Finite Element Based on MPI for Marine Controllable Source Electromagnetic Method[D]. Chengdu:Chengdu University of Technology, 2014.
[3] 杨淼鑫. 二维各向异性大地电磁场的有限元数值模拟[D]. 成都:成都理工大学,2012. Yang Miaoxin. Finite Element Numerical Simulation of 2D Anisotropic Magnetotelluric Field[D]. Chengdu:Chengdu University of Technology, 2012.
[4] 郑彦丰. 层状各向异性介质大地电磁正反演研究[D]. 西安:长安大学,2017. Zheng Yanfeng. Study on Forward and Inverse Magnetotelluric Inversion of Layered Anisotropic Media[D]. Xi'an:Chang'an University, 2017.
[5] 李志旋. 大地电磁二、三维非结构有限元数值模拟[D]. 合肥:中国科学技术大学,2016. Li Zhixuan. Two-Dimensional and Three-Dimensional Unstructured Finite Element Numerical Simulation of Magnetotelluric Magnetism[D]. Hefei:University of Science and Technology of China, 2016.
[6] 薛帅. 大地电磁各向异性介质正演与NLCG反演研究[D]. 长沙:中南大学,2013. Xue Shuai. Research on Forward Modeling of Magnetotelluric Anisotropic Media and NLCG Inversion[D]. Changsha:Central South University, 2013.
[7] 徐震寰. 电阻率任意各向异性介质大地电磁场三维正演算法研究[D]. 青岛:中国海洋大学,2015. Xu Zhenhuan. Research on 3D Forward Algorithm of Magnetotelluric Field in Anisotropic Medium with Arbitrary Resistivity[D]. Qingdao:Ocean University of China, 2015.
[8] 杨长福. 大地电磁二维对称各向异性介质的有限元数值模拟[J]. 西北地震学报, 1997,19(2):28-34. Yang Changfu. Finite Element Numerical Simulation of Magnetotelluric Two-Dimensional Symmetric Anisotropic Medium[J]. Journal of Northwestern Seismology, 1997,19(2):28-34.
[9] 殷长春, 张博, 刘云鹤. 面向目标自适应三维大地电磁正演模拟[J]. 地球物理学报, 2017,60(1):327-336. Yin Changchun, Zhang Bo, Liu Yunhe. Target-Oriented Adaptive 3D Magnetotelluric Forward Modeling[J]. Chinese Journal of Geophysics, 2017,60(1):327-336.
[10] Li Y, Key K. 2D Marine Controlled-Source Electromagnetic Modeling:Part 1:An Adaptive Finite-Element Algorithm[J]. Geophysics, 2007, 72(2):51-62.
[11] 张博. 基于非结构有限元的频率/时间域航空电磁系统仿真研究[D]. 长春:吉林大学,2017. Zhang Bo. Simulation Study of Frequency/Time Domain Aeronautical Electromagnetic System Based on Unstructured Finite Element[D]. Changchun:Jilin University, 2017.
[12] 张君涛. 大地电磁测深二维各向异性有限元正演模拟[D]. 成都:成都理工大学,2016. Zhang Juntao. Two-Dimensional Anisotropic Finite Element Forward Modeling of Magnetotelluric Sounding[D]. Chengdu:Chengdu University of Technology, 2016.
[13] 张振宇. 龙门山构造带中段大地电磁测深研究[D]. 成都:成都理工大学,2010. Zhang Zhenyu. Study on the Magnetotelluric Sounding in the Middle Section of Longmenshan Tectonic Belt[D]. Chengdu:Chengdu University of Technology, 2010.
[14] Schlumberger. Etude Sur La Prospection Electrique Du Sous-Sol[J]. Phys Earth Planet, 1920,21:43-44.
[15] Keller. Electrical Methods in Geophysical Prospecting[J]. Monographs, 1966,82(2):172-174.
[16] 陈乐寿. 有限元法在大地电磁场正演计算中的应用及改进[J]. 石油物探, 1981, 43(3):243-262. Chen Leshou. Application and Improvement of Finite Element Method in the Forward Calculation of Magnetotelluric Field[J]. Geophysical Prospecting for Petroleum, 1981,43(3):243-262.
[17] Wannamaker P E,Stodt J A, Rijo L. A Stable Finite Element Solution for Two-Dimensional Magnetotelluric Modelling[J]. Geophysical Journal International, 2010, 88(1):277-296.
[18] Key K, Weiss C. Adaptive Finite-Element Modeling Using Unstructured Grids:The 2D Magnetotelluric Example[J]. Geophysics, 2006,71(6):291-299.
[19] Liu C, Ren Z, Tang J, et al. Three-Dimensional Magnetotellurics Modeling Using Edgebased Finite-Element Unstructured Meshes[J]. Applied Geophysics, 2008,5(3):170-180.
[20] Liu Y, Xu Z, Li Y. Adaptive Finite Element Modelling of Three-Dimensional Magnetotelluric Fields in General Anisotropic Media[J]. Journal of Applied Geophysics, 2018,151(2):113-124.
[21] Li Yuguo, Pek J. Adaptive Finite Element Modelling of Two-Dimensional Magnetotelluric Fields in General Anisotropic Media[J]. Geophysical Journal International,2008,175(3):942-954.
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