孔隙介质震电方程
摘要
本文从孔隙介质波动力学观点出发，研究了孔隙介质中的几个方面的震电转换机制。流体相对骨架运动时，孔隙中存在压力梯度，使孔隙流体中的过剩电荷作走向运动，产生运流电流。孔隙介质的膨胀和收缩运动使得电荷密度产生变化，引起相应的电流密度的变化。孔隙介质中孔隙的不均匀性使得电荷在细孔隙的端日积聚，产生极化电场。地震波产生电流源，而电流源产生电磁场。本文作者结合孔隙介质理论和麦克斯韦电磁理论建立了震电波动方程组。每个震电转化过程中，电磁场一方面阻碍了流体相对骨架的运动，减小地震波的流体粘滞衰减；另一方面，它们对孔隙介质产生反作用力，消耗由地震波转化而来的电磁能量。
引文
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[8]钱家栋,陈有发等译,《地震地电学译文集》,地震出版社.1989年。
[2]J.Frenkel,On the theory of seismic seismoelectric phyenomena in a moist soil,Journal ofphysics ,Vol. 8, 1944.
[3]S.T.Martner and N.R.Sparks,The electroseismic effect,Geophysics,24,297,1959.
[4]A. H. Thompson and G. A. Gist, Geophysical application of electrokinetic conversion,TheLeading Edge,1169～1173,1993.
[5]J.Neev and F.R.Yeatts,Electrokinetic effects in fluid-saturated poroelastic media,PhysicalReview B,40,9135～9141,1989.
[6]M. A.Biot,Theory of propagation of elastic waves in a fluid-saturated porous solid. I Lowfrequency range.J.Acoust Soc.Am.,28,168～178,1956.
[7]S.R.Pride,Governing equation for the coupled electromagnetics and acoustics of porousmedia,Physical Review B, 50, 15678～15696, 1994.
[8]钱家栋,陈有发等译,《地震地电学译文集》,地震出版社.1989年。
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