3D elastic full-waveform inversion of surface waves in the presence of irregular topography using an envelope-based misfit function

Dmitry Borisov, Ryan Modrak, Fuchun Gao, Jeroen Tromp

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

Full-waveform inversion (FWI) is a powerful method for estimating the earth's material properties. We demonstrate that surface-wave-driven FWI is well-suited to recovering near-surface structures and effective at providing S-wave speed starting models for use in conventional body-wave FWI. Using a synthetic example based on the SEG Advanced Modeling phase II foothills model, we started with an envelope-based objective function to invert for shallow largescale heterogeneities. Then we used a waveform-difference objective function to obtain a higher-resolution model. To accurately model surface waves in the presence of complex tomography, we used a spectral-element wave-propagation solver. Envelope misfit functions are found to be effective at minimizing cycle-skipping issues in surface-wave inversions, and surface waves themselves are found to be useful for constraining complex near-surface features.

Original languageEnglish (US)
Pages (from-to)R1-R11
JournalGeophysics
Volume83
Issue number1
DOIs
StatePublished - Jan 1 2018

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology

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