Simulation of seismoelectric waves using finite-difference frequency-domain method: 2-D SHTE mode

Gao, Yongxin1; Wang, Dongdong1; Yao, Cheng1; Guan, Wei2; Hu, Hengshan2; Wen, Jian3,4; Zhang, Wei5; Tong, Ping6,7; Yang, Qingjie8,9

2019-01

10.1093/gji/ggy433

GEOPHYSICAL JOURNAL INTERNATIONAL   影响因子和分区

0956-540X

1365-246X

We develop a finite-difference frequency-domain (FDFD) method to simulate the 2-D SHTE-mode seismoelectric waves. The method approximates the spatial derivatives and non-derivative terms of the wave equations using the weighted-averaging finite-difference operators in a 25-point computational stencil. To suppress the reflections of the seismic and EM waves from the truncated boundaries, we apply the perfectly matched layers (PMLs) surrounding the interior modelled area to absorb the seismic waves, and add several additional layers out of the PMLs to absorb the EM waves. We validate the FDFD method by comparing the FDFD solutions in a two-layer model with the solutions from an analytically-based method. The results show that the FDFD solutions agree excellently with analytical solutions in both the seismic and EM signals, proving that the FDFD method is an efficient and powerful tool in modelling the seismoelectric waves. The FDFD method proposed in this paper requires no quasi-static approximation, and thus can be used to accurately model and interpret the seismoelectric responses in a complex stratum.

Electrical properties Electromagnetic theory Numerical modelling Body waves Interface wave Wave propagation

SCI ; EI

英语

其他

National Science and Technology Major Project of China[2017ZX05019006-006]

Geochemistry & Geophysics

Geochemistry & Geophysics

WOS:000465363500028

OXFORD UNIV PRESS

20185006236923

Computation theory ; Electric fields ; Electric properties ; Electromagnetic waves ; Finite difference method ; Numerical models ; Seismology ; Wave propagation

Earthquake Measurements and Analysis:484.1 ; Electricity: Basic Concepts and Phenomena:701.1 ; Electromagnetic Waves:711 ; Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory:721.1 ; Mathematics:921

GEOSCIENCES

Web of Science

1.Hefei Univ Technol, Sch Civil Engn, Hefei 230009, Anhui, Peoples R China
2.Harbin Inst Technol, Dept Astronaut & Mech, Harbin, Heilongjiang, Peoples R China
3.Univ Sci & Technol China, Lab Seismol & Phys Earths Interior, Hefei 230026, Anhui, Peoples R China
4.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Anhui, Peoples R China
5.Southern Univ Sci & Technol, Sch Earth & Space Sci, Shenzhen 518055, Peoples R China
6.Nanyang Technol Univ, Sch Phys & Math Sci, Div Math Sci, Singapore, Singapore
7.Nanyang Technol Univ, Asian Sch Environm, Singapore, Singapore
8.Chinese Acad Sci, Inst Geodesy & Geophys, Ctr Computat & Explorat Geophys, 340 Xudong Rd, Wuhan 430077, Hubei, Peoples R China
9.State Key Lab Geodesy & Earths Dynam, 340 Xudong Rd, Wuhan 430077, Hubei, Peoples R China

Gao, Yongxin,Wang, Dongdong,Yao, Cheng,et al. Simulation of seismoelectric waves using finite-difference frequency-domain method: 2-D SHTE mode[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2019,216(1):414-438.

Gao, Yongxin.,Wang, Dongdong.,Yao, Cheng.,Guan, Wei.,Hu, Hengshan.,...&Yang, Qingjie.(2019).Simulation of seismoelectric waves using finite-difference frequency-domain method: 2-D SHTE mode.GEOPHYSICAL JOURNAL INTERNATIONAL,216(1),414-438.

Gao, Yongxin,et al."Simulation of seismoelectric waves using finite-difference frequency-domain method: 2-D SHTE mode".GEOPHYSICAL JOURNAL INTERNATIONAL 216.1(2019):414-438.