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Title: Multiscale and Layer-Stripping Wave-Equation Dispersion Inversion of Rayleigh Waves

Abstract

The iterative wave-equation dispersion inversion can suffer from the local minimum problem when inverting seismic data from complex Earth models. We develop a multiscale, layer-stripping method to alleviate the local minimum problem of wave-equation dispersion inversion of Rayleigh waves and improve the inversion robustness. We first invert the high-frequency and near-offset data for the shallow S-velocity model, and gradually incorporate the lower-frequency components of data with longer offsets to reconstruct the deeper regions of the model. We use a synthetic model to illustrate the local minima problem of wave-equation dispersion inversion and how our multiscale and layer-stripping wave-equation dispersion inversion method can mitigate the problem. Here, we demonstrate the efficacy of our new method using field Rayleigh-wave data.

Authors:
ORCiD logo [1]; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Geothermal Technologies Office (EE-4G)
OSTI Identifier:
1514981
Report Number(s):
LA-UR-18-28375
Journal ID: ISSN 0956-540X
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Accepted Manuscript
Journal Name:
Geophysical Journal International
Additional Journal Information:
Journal Volume: 218; Journal Issue: 3; Journal ID: ISSN 0956-540X
Publisher:
Oxford University Press
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; Earth Sciences; layer-stripping; multiscale; surface wave; wave-equation dispersion inversion

Citation Formats

Liu, Zhaolun, and Huang, Lianjie. Multiscale and Layer-Stripping Wave-Equation Dispersion Inversion of Rayleigh Waves. United States: N. p., 2019. Web. doi:10.1093/gji/ggz215.
Liu, Zhaolun, & Huang, Lianjie. Multiscale and Layer-Stripping Wave-Equation Dispersion Inversion of Rayleigh Waves. United States. doi:10.1093/gji/ggz215.
Liu, Zhaolun, and Huang, Lianjie. Fri . "Multiscale and Layer-Stripping Wave-Equation Dispersion Inversion of Rayleigh Waves". United States. doi:10.1093/gji/ggz215.
@article{osti_1514981,
title = {Multiscale and Layer-Stripping Wave-Equation Dispersion Inversion of Rayleigh Waves},
author = {Liu, Zhaolun and Huang, Lianjie},
abstractNote = {The iterative wave-equation dispersion inversion can suffer from the local minimum problem when inverting seismic data from complex Earth models. We develop a multiscale, layer-stripping method to alleviate the local minimum problem of wave-equation dispersion inversion of Rayleigh waves and improve the inversion robustness. We first invert the high-frequency and near-offset data for the shallow S-velocity model, and gradually incorporate the lower-frequency components of data with longer offsets to reconstruct the deeper regions of the model. We use a synthetic model to illustrate the local minima problem of wave-equation dispersion inversion and how our multiscale and layer-stripping wave-equation dispersion inversion method can mitigate the problem. Here, we demonstrate the efficacy of our new method using field Rayleigh-wave data.},
doi = {10.1093/gji/ggz215},
journal = {Geophysical Journal International},
number = 3,
volume = 218,
place = {United States},
year = {2019},
month = {5}
}

Journal Article:
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