2019
DOI: 10.1190/geo2018-0660.1
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Local-crosscorrelation elastic full-waveform inversion

Abstract: Full-waveform inversion (FWI) in its classic form is a method based on minimizing the [Formula: see text] norm of the difference between the observed and simulated seismic waveforms at the receiver locations. The objective is to find a subsurface model that reproduces the full waveform including the traveltimes and amplitudes of the observed seismic data. However, the widely used [Formula: see text]-norm-based FWI faces many issues in practice. The point-wise comparison of waveforms fails when the phase differ… Show more

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Cited by 23 publications
(7 citation statements)
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“…Besides, it is very hard to match the amplitudes in practice (non-reproducible noise, attenuation, and so on). Thus, we introduced local-similarity to measure the shape of different modes (Zhang & Alkhalifah, 2019a, 2019b. The local similarity, instead of global similarity, is more friendly to data with many arrivals (i.e., different modes).…”
Section: Discussionmentioning
confidence: 99%
See 2 more Smart Citations
“…Besides, it is very hard to match the amplitudes in practice (non-reproducible noise, attenuation, and so on). Thus, we introduced local-similarity to measure the shape of different modes (Zhang & Alkhalifah, 2019a, 2019b. The local similarity, instead of global similarity, is more friendly to data with many arrivals (i.e., different modes).…”
Section: Discussionmentioning
confidence: 99%
“…The proposed objective function aims to match the slopes of arrivals, and it is insensitive to the polarity difference. We refer readers to two related publications for more details (Zhang & Alkhalifah, 2019a, 2019b.…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…There are some ideas proposed by other researchers we can learn from to improve our method. Zhang and Alkhalifah [51]- [52] compared two traces within a predefined local time extension which is not limited by the half-cycle criterion. Leeuwen and Mulder [53] proposed a misfit criterion to measure the relative phase shift which is a weighted norm of the correlation and is less sensitive to differences in the amplitude spectra.…”
Section: Discussionmentioning
confidence: 99%
“…(a) Rayleigh wave inversion centered at 8 Hz with a searching extension of 30% (Z.‐D. Zhang & Alkhalifah, 2019a). (b) Rayleigh wave inversion centered at 8 Hz with a searching extension of 10%.…”
Section: Inversion Uncertainty Analysismentioning
confidence: 99%