Finite Element Procedures for Electroseismic Modeling

FABIO I. ZYSERMAN; PATRICIA M. GAUZELLINO; JUAN E. SANTOS

JOURNAL OF APPLIED GEOPHYSICS

ELSEVIER SCIENCE BV

Año: 2010 vol. 72 p. 79 - 91

0926-9851

This work presents a numerical methodology to simulate the physical phenomena in which there is conversion between electromagnetic and mechanical (kinetic) energy. The electroseismic equations linkingthe diffusive electromagnetic and seismic wavefields are solved using the finite element method. The subsurface is modeled as a 2D fluid-saturated layered porous medium. It is illuminated by two differentkinds of electromagnetic sources, one giving rise to transverse electric (TE) fields and the other one totransverse-magnetic (TM) fields; the former are coupled with SH and the latter with PSV mechanicaldisplacements respectively. Examples illustrating the capabilities of the presented methodology, including partially saturated gas regions are presented.