Numerical simulation of the effect of a DC electric field on seismic wave propagation with the pseudospectral time domain method

doi:10.1007/s00024-006-0103-5

	Numerical simulation of the effect of a DC electric field on seismic wave propagation with the pseudospectral time domain method
	Liu, Lanbo ; Xiao, Lei ; Liu, Hong ; Yan, Hongrui
刊名	PURE AND APPLIED GEOPHYSICS
	2006-09-01
卷号	163 期号:9 页码:1893-1913
关键词	seismoelectric coupling pseudospectral time domain method DC current seismic exploration
ISSN号	0033-4553
DOI	10.1007/s00024-006-0103-5
文献子类	Article
英文摘要	We have modeled the effect of a direct current (DC) electric field on the propagation of seismic waves by the pseudospectral time domain (PSTD) method, based on a set of governing equations for the poroelastic media. This study belongs to the more general term of the seismoelectric coupling effect. The set of physical equations consists of the poroelastodynamic equations for the seismic waves and the Maxwell's equations for the electromagnetic waves; the magnitude of the seismoelectric coupling effect is characterized by the charge density, the electric conductivity, the Onsager coefficient, a function of the dielectric permittivity, the fluid viscosity, and the zeta potential. The poroelastodynamic vibration of a solid matrix generates an electric oscillation with the form of streaming current via the fluctuation of pore pressure. Meanwhile, fluctuating pore pressure also causes oscillatory variation of the electric resistivity of the solid matrix. The simulated poroelastic wave propagation and electric field variation with an existing background DC electric field are compared with the results of a physical experiment carried out in an oilfield. The results show that the DC electric field can significantly affect the propagating elastic energy through the seismoelectric coupling in a wide range of the seismic frequency band.
WOS关键词	ACOUSTIC PROPAGATION ; ROCK FRACTURE ; POROUS-MEDIA
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	BIRKHAUSER VERLAG AG
WOS记录号	WOS:000241455500011
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/67070]
专题	中国科学院地质与地球物理研究所
通讯作者	Liu, Lanbo
作者单位	1.Univ Connecticut, Dept Civil & Environm Engn, Storrs, CT 06269 USA 2.Chinese Acad Sci, Inst Geophys, Beijing 100101, Peoples R China 3.Daqing Petr Adm Bur, Heilongjiang 163453, Peoples R China
推荐引用方式 GB/T 7714	Liu, Lanbo,Xiao, Lei,Liu, Hong,et al. Numerical simulation of the effect of a DC electric field on seismic wave propagation with the pseudospectral time domain method[J]. PURE AND APPLIED GEOPHYSICS,2006,163(9):1893-1913.
APA	Liu, Lanbo,Xiao, Lei,Liu, Hong,&Yan, Hongrui.(2006).Numerical simulation of the effect of a DC electric field on seismic wave propagation with the pseudospectral time domain method.PURE AND APPLIED GEOPHYSICS,163(9),1893-1913.
MLA	Liu, Lanbo,et al."Numerical simulation of the effect of a DC electric field on seismic wave propagation with the pseudospectral time domain method".PURE AND APPLIED GEOPHYSICS 163.9(2006):1893-1913.