Multiscale and layer-stripping wave-equation dispersion inversion of Rayleigh waves

Zhaolun Liu; Lianjie Huang

doi:10.1190/segam2018-2997500.1

Multiscale and layer-stripping wave-equation dispersion inversion of Rayleigh waves

Zhaolun Liu
, Lianjie Huang

Los Alamos National Laboratory
King Abdullah University of Science and Technology

Research output: Contribution to conference › Paper › peer-review

4 Scopus citations

Abstract

Rayleigh-wave inversion could converge to a local minimum of its objective function for a complex subsurface model. We develop a multiscale strategy and a 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 demonstrate the efficacy of this multiscale and layer-stripping method using synthetic and field Rayleigh-wave data.

Original language	English
Pages	2536-2540
Number of pages	5
DOIs	https://doi.org/10.1190/segam2018-2997500.1
State	Published - 2019
Externally published	Yes
Event	88th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2018 - Anaheim, United States Duration: 14 Oct 2018 → 19 Oct 2018

Conference

Conference	88th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2018
Country/Territory	United States
City	Anaheim
Period	14/10/18 → 19/10/18

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10.1190/segam2018-2997500.1

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title = "Multiscale and layer-stripping wave-equation dispersion inversion of Rayleigh waves",

abstract = "Rayleigh-wave inversion could converge to a local minimum of its objective function for a complex subsurface model. We develop a multiscale strategy and a 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 demonstrate the efficacy of this multiscale and layer-stripping method using synthetic and field Rayleigh-wave data.",

author = "Zhaolun Liu and Lianjie Huang",

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T1 - Multiscale and layer-stripping wave-equation dispersion inversion of Rayleigh waves

AU - Liu, Zhaolun

AU - Huang, Lianjie

PY - 2019

Y1 - 2019

N2 - Rayleigh-wave inversion could converge to a local minimum of its objective function for a complex subsurface model. We develop a multiscale strategy and a 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 demonstrate the efficacy of this multiscale and layer-stripping method using synthetic and field Rayleigh-wave data.

AB - Rayleigh-wave inversion could converge to a local minimum of its objective function for a complex subsurface model. We develop a multiscale strategy and a 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 demonstrate the efficacy of this multiscale and layer-stripping method using synthetic and field Rayleigh-wave data.

UR - https://www.scopus.com/pages/publications/85059375086

U2 - 10.1190/segam2018-2997500.1

DO - 10.1190/segam2018-2997500.1

M3 - 论文

AN - SCOPUS:85059375086

SP - 2536

EP - 2540

T2 - 88th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2018

Y2 - 14 October 2018 through 19 October 2018

ER -

Multiscale and layer-stripping wave-equation dispersion inversion of Rayleigh waves

Abstract

Conference

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