Adaptive waveform inversion: Theory
By M. Warner, Lluis Guasch. 2014
382 citations recorded by the source corpus.
ABSTRACTConventional full-waveform seismic inversion attempts to find a model of the subsurface that is able to predict observed seismic waveforms exactly; it proceeds by minimizing the difference between the observed and predicted data directly, iterating in a series of linearized steps from an assumed starting model. If this starting model is too far removed from the true model, then this approach leads to a spurious model in which the predicted data are cycle skipped with respect to the observed data. Adaptive waveform inversion (AWI) provides a new form of full-waveform inversion (FWI) that appears to be immune to the problems otherwise generated by cycle skipping. In this method, least-squares convolutional filters are designed that transform the predicted data into the observed data. The inversion problem is formulated such that the subsurface model is iteratively updated to force these Wiener filters toward zero-lag delta functions. As that is achieved, the predicted data evolve toward the observed...
Subfields: Geophysics, Ocean Engineering
View Paper: https://www.semanticscholar.org/paper/c9794306d3832d02f7f7d18a71457683a9ccde90
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In Geophysics
- Yunan Yang
- Bjorn Engquist
- Rami Nammour
- William W. Symes
- Guanghui Huang
- Felix J. Herrmann
- Hu Jin
- H. Guan
In Ocean Engineering
Citations in the corpus
- Analysis of optimal transport and related misfit functions in full-waveform inversion (2017, background): “Other misfit functions proposed in literature (Brossier et al., 2010; Bozdag et al., 2011), include the Huber norm (Ha et al., 2009), filter-based misfit functions (Warner and Guasch, 2014; Zhu and Fomel, 2016), seismic envelop inversion (Luo and Wu, 2015), etc.”
- Full-waveform inversion via source-receiver extension (2017, methodology): “Warner and Guasch (2014, 2016) use a very similar approach as part of adaptive waveform inversion (AWI) and shows its capacity to enlarge the domain of attraction for FWI and its practicality for application to contemporary 3D field surveys.”