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Initial model construction for elastic full waveform inversion using envelope inversion method
| Content Provider | Semantic Scholar |
|---|---|
| Author | Luo, Jingrui Wu, Ru-Shan |
| Copyright Year | 2015 |
| Abstract | We developed an elastic envelope inversion method. The envelope of the wavefields carries ultra low frequency information which can be used to recover the large-scale component of the model, and the initial model dependence of waveform inversion can be reduced. We derived the misfit function and the corresponding gradient operator for elastic envelope inversion. Numerical tests using synthetic data for the Marmousi II model proved the validity and feasibility of the proposed approach. The inverted p-wave velocity and s-wave velocity from the combined envelope inversion plus waveform inversion (EI+WI) indicated that it can deliver much improved results compared with regular elastic full waveform inversion. Furthermore, to test the independence of the elastic envelope inversion to the source frequency band, we used a low-cut source wavelet (cut from 5Hz below) to generate the synthetic data. The envelope inversion and the combined EI+WI showed no appreciable difference from the full-band source results. |
| Starting Page | 1420 |
| Ending Page | 1424 |
| Page Count | 5 |
| File Format | PDF HTM / HTML |
| DOI | 10.1190/segam2015-5820719.1 |
| Alternate Webpage(s) | https://websites.pmc.ucsc.edu/~wrs/publication/seg/seg2015-2016/5820719-Luo%20elastic-env-15.pdf |
| Alternate Webpage(s) | https://doi.org/10.1190/segam2015-5820719.1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
