Modelling of Seismoelectric EffectsB. Kröger, U. Yaramanci, and A. Kemna
1 University of Bonn
We present the results of full-waveform time-dependent finite-element modelling of coupled seismoelectromagnetic wave propagation in fluid-saturated porous media. To describe the seismoelectric response of the system a new set of equations is developed which couple the poroelasticity theory and Maxwell’s equations via flux/force transport equations in a thermodynamical sense. The coupling mechanism is of electrokinetic nature involving relative displacement of ions at the matrix-fluid interface in the pore space. Modelling is performed with COMSOL Multiphysics on the basis of a two-dimensional implementation of the coupled equations with a view to an improved understanding of the interactions of the main effects characterizing the coupled seismic and electromagnetic responses.