A stability estimate for the inverse electroseismic problem

Friday, May 3, 2019 - 9:00am - 9:50pm
Lind 305
Eric Bonnetier (Université Grenoble-Alpes)
In porous media, the motion of charges at the fluid/solid interfaces induces a coupling between seismic and electromagnetic waves. This phenomenon, known as the electro-kinetic effect is at the heart of
electroseismic imaging, a technique used in oil prospection to image sedimentary layers of porous media. It combines the high sensitivity to material parameter contrast of electromagnetic waves and the ability
to carry information with little distorsion of seismic waves.The system we study couples the Biot equations, which govern the propagation of elastic waves through porous media, and the Maxwell equations. We prove a stability estimate for the inverse problem of recovering the electro-magnetic parameters from measurements near the boundary. This is joint work with Faouzi Triki and Qi Xue.