@article{4d572a5cd0de488da1c12538b0698b64,
title = "3D elastic full-waveform inversion of surface waves in the presence of irregular topography using an envelope-based misfit function",
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.",
author = "Dmitry Borisov and Ryan Modrak and Fuchun Gao and Jeroen Tromp",
note = "Funding Information: The authors thank TOTAL E&P Research and Technology for providing financial support and computational resources and for permission to publish this work. We thank the SEAM Consortium for providing the SEAM phase II foothills model, in particular, and A. Feltham. We also thank B. Duquet and P. Williamson for fruitful discussions and practical suggestions for improving the manuscript. We thank D. Cooper for helping with HPC issues encountered on a TOTAL cluster. Additional computational resources were made available through the Princeton Institute for Computational Science and Engineering (PICSciE). We also thank the associate editor A. Baumstein, assistant editor J. Shragge, and four anonymous reviewers for their fruitful comments on the manuscript. Publisher Copyright: {\textcopyright} 2018 Society of Exploration Geophysicists. All rights reserved. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",
year = "2018",
month = jan,
day = "1",
doi = "10.1190/GEO2017-0081.1",
language = "English (US)",
volume = "83",
pages = "R1--R11",
journal = "Geophysics",
issn = "0016-8033",
publisher = "Society of Exploration Geophysicists",
number = "1",
}