An algorithm for modeling and interpretation of seismoelectric data
Journal Title: Journal of Science and today’s world - Year 2013, Vol 2, Issue 1
Abstract
In general speaking, seismoelectric modeling is a prospecting method, based on seismic and electromagnetic waves, in which waves generated by a seismic source at the boundary of the two medium generate a relative fluid-solid motion formed as a result of antagonism between elastic properties of the medium with the saturated fluid. This research has as its objective study of the effect of electric field due to DC current on propagation of seismic wave by pseudo spectral time domain method, or the more general concept of seismoelectric coupling effect. In this research, poroelastic equations were used for seismic waves and Maxwell’s equations for electromagnetic waves, and the seismoelectric effect or charge density, electrical conductivity, dielectric permittivity function, fluid viscosity and zeta potential were determined. DC electric field variation were compared with results of physical experiment conducted in modeled medium, and the results revealed that DC electric significantly affected propagation of elastic energy through seismoelectric coupling in a wide range of seismic frequency width. In addition to, boundaries of substrata were specified using horizontal component of electric field of Electromagnetic wave.
Authors and Affiliations
Hooman Latifi, Mirsattar Meshinchi. Asl, Mohammad Ali Riahi
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