VIRIEUX , J.

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We present a 3D frequency-domain finite-difference method for acoustic wave propagation modeling. This method is developed as a tool to perform 3D frequency-domain full-waveform inversion of wide-angle seismic data. For wide-angle data, frequency-domain full-waveform inversion can be applied only to few discrete frequencies to develop reliable...

An investigation of the teleseismic P-wave coda is performed using the single-scattering approximation. The method allows one to image short-wavelength scale (≤2 km) velocity and density heterogeneities and structures that are barely detected by traveltime tomography. Source effects are removed by using receiver functions for data...

We propose here a method for maging near-surface structures although it can nevertheless be applied for deeper areas characterization. We perform the elastic full waveform inversion in the frequency domain in order to recover physical properties of the medium from both body waves and surfaces waves. We first present the forward problem and then...

International audience

International audience

International audience

Geophysical Journal International, v. 152, n. 2, p. 486-496, 2003. http://dx.doi.org/10.1046/j.1365-246X.2003.01864.x

Seismological Research Letters, v. 74, n. 5, p. [659], 2003

We present a distributed-memory parallel algorithm for 2D visco-acoustic full-waveform inversion of wide-angle seismic data. Our code is written in fortran90 and use MPI for parallelism. The algorithm was applied to real wide-angle data set recorded by 100 OBSs with a 1-km spacing in the eastern-Nankai trough (Japan) to image the deep structure...