Discontinuous Galerkin Method in Frequency-space Domain for Wave Propagation in 2D Heterogeneous Porous Media

Wave propagation in heterogenous two dimensions porous media plays an important role for subsurface investigation. We consider solving dynamic wave propagation using discontinuous Galerkin method in frequency domain. This frequential approach allows us to take into account efficiently diffusive phenomena at the source and at any discontinuities including the free surface, related to Biot theory on porous medium. The propagation code is validated on simple cases with a reflectivity code which is working in wavenumber-frequency domain for stratified media. The frequency formulation better controls the energy balance at interfaces due to fluid/solid interactions. The main perspectives is focused on time differential imaging by full waveform techniques in porous media.