Joint Inversion of Magnetotelluric Impedance and Tipper Data in 3D Axial Anisotropic Media-Reference-Cited by-同舟云学术

Joint Inversion of Magnetotelluric Impedance and Tipper Data in 3D Axial Anisotropic Media

Published:2020-03 Issue:1 Volume:25 Page:25-36
ISSN:1083-1363
Container-title:Journal of Environmental and Engineering Geophysics
language:en
Short-container-title:JEEG

Author:

Luo Wei¹²³,Wang Kunpeng¹³⁴,Cao Hui¹³⁴,Duan Changsheng¹⁵,Wang Tao⁶,Jian Xingxiang¹³⁴

Affiliation:

1. College of Geophysics, Chengdu University of Technology, Chengdu 610059, Sichuan, China

2. SiChuan Shu Tong Geotechnical Engineering Company, Chengdu 610081, Sichuan, China

3. Key Laboratory of Earth Exploration and Information Technology of Ministry of Education, Chengdu University of Technology, Chengdu 610059, Sichuan, China

4. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, Sichuan, China

5. Ganzhongnan Institute of Geology and Mineral Exploration, Nanchang 330029, Jiangxi, China

6. Key Laboratory of Electromagnetic Radiation and Sensing Technology, Chinese Academy of Sciences, Beijing 100190, China

Abstract

Magnetotelluric (MT) impedance and tipper data can be utilized to reflect underground structural information. However, when the axial anisotropic property of an abnormal body is marked, it will seriously influence MT measuring data. This study divides the MT field into primary and secondary components and replaces the conductivity parameter in a three-dimensional (3D) governing equation with axial anisotropic conductivity. Analysis of the influence of axial anisotropy on MT tipper data is presented, and a limited-memory Broyden-Fletcher-Goldfarb-Shanno method is then utilized to realize a 3D MT axial anisotropic inversion with impedance and tipper data. The tests presented in this paper show that the resolution of the inverting axial anisotropic model with impedance and tipper data is better than that of only using impedance data.

Publisher

Environmental and Engineering Geophysical Society

Subject

Geophysics,Geotechnical Engineering and Engineering Geology,Environmental Engineering

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