3D Finite-Difference Frequency-Domain Modeling of Acoustic Wave Propagation Using a Massively Parallel Direct Solver

C027 3D Finite-Difference Frequency-Domain Modeling of Acoustic Wave Propagation Using a Massively Parallel Direct Solver H. Ben Hadj Ali* (Geosciences Azur - CNRS) S. Operto (Geosciences Azur - CNRS) J. Virieux (Geosciences Azur - UNSA) P. Amestoy (ENSEEIHT-IRIT) J.Y. L'Excellent (ENS Lyon-INRIA) & L. Giraud (ENSEEIHT-IRIT) SUMMARY We present a finite-difference frequency-domain method (FDFD) for 3D modeling of visco-acoustic wave propagation. We propose this method as a tool for frequency-domain full-waveform inversion (FWI) of global offset data. Within such context only few frequencies need to be modeled for multiple shot positions. Frequencydomain modeling reduces to resolution of a large sparse