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The Leading Edge
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The Leading Edge
Article . 2016 . Peer-reviewed
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The Leading Edge
Article . 2016 . Peer-reviewed
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Toward an automatic full-wave inversion: Synthetic study cases

Authors: Jean Kormann; Juan Esteban Rodríguez; Natalia Gutierrez; Miguel Ferrer; Otilio Rojas; Josep de la Puente; Mauricio Hanzich; +1 Authors

Toward an automatic full-wave inversion: Synthetic study cases

Abstract

Full-waveform inversion (FWI) in seismic scenarios continues to be a complex procedure for subsurface imaging that might require extensive human interaction in terms of model setup, constraints, and data preconditioning. The underlying reason is the strong nonlinearity of the problem that forces the addition of a priori knowledge (or bias) in order to obtain geologically sound results. In particular, when the use of a long-offset receiver is not possible or may not favor the reconstruction of the fine structure of the model, one needs to rely on reflection data. As a consequence, the inversion process is more prone to becoming stuck in local minima. Nevertheless, misfit functionals can be devised that can either cope with missing long-wavenumber features of initial models (e.g., cross-correlation-based misfit) or invert reflection-dominated data whenever the models are sufficiently good (e.g., normalized offset-limited least-squares misfit). By combining both, high-frequency data content with poor initial models can be successfully inverted. If one can figure out simple parameterizations for such functionals, the amount of uncertainty and manual work related to tuning FWI would be substantially reduced. Thus, FWI might become a semiautomatized imaging tool.

Country
Spain
Keywords

:Desenvolupament humà i sostenible [Àrees temàtiques de la UPC], Àrees temàtiques de la UPC::Desenvolupament humà i sostenible, Crosscorrelation, Full-waveform inversion, Waveforms (Cathode ray oscillographs), Tsunamis, Sismometria, Acoustic, Seismic design, 2D

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
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