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lastic frequency-domain full-waveform inversion
| Content Provider | Semantic Scholar |
|---|---|
| Author | Brossier, Omain Operto, Stéphane Virieux, Jean |
| Copyright Year | 2009 |
| Abstract | Quantitative imaging of the elastic properties of the subsurface at depth is essential for civil engineering applications and oiland gas-reservoir characterization. A realistic synthetic example provides for an assessment of the potential and limits of 2D elastic full-waveform inversion FWI of wide-aperture seismic data for recovering high-resolution Pand S-wave velocity models of complex onshore structures. FWI of land data is challenging because of the increased nonlinearity introduced by freesurface effects such as the propagation of surface waves in the heterogeneous near-surface. Moreover, the short wavelengths of the shear wavefield require an accurate S-wave velocity starting model if low frequencies are unavailable in the data. We evaluated different multiscale strategies with the aim of mitigating the nonlinearities. Massively parallel full-waveform inversion was implemented in the frequency domain. The numerical optimization relies on a limited-memory quasi-Newton algorithm that |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://users.isterre.fr/brossier/Brossier_2009_GEO.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
