Global inversion of surface wave dispersion curves based on improved weighted average velocity method

E. C. Leong; A. M.W. Aung

doi:10.1061/(ASCE)GT.1943-5606.0000939

Global inversion of surface wave dispersion curves based on improved weighted average velocity method

E. C. Leong^*, A. M.W. Aung

^*Corresponding author for this work

Nanyang Technological University

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

In this paper, a global inversion algorithm for surface wave dispersion curve is proposed. An improved weighted average velocity (Wave) method is used as the forward model and generalized reduced gradient (GRG) method is used for minimization of misfit function. The development of the proposed algorithm is detailed. The proposed inversion algorithm is then used to invert synthetic Rayleigh wave dispersion curves of known one-dimensional (1D) soil profiles and results show that the initial soil profile population size of 10,000 is sufficient to obtain the global minimum solution. Finally, field Rayleigh wave dispersion curves are inverted to show that the 1D shear wave velocity (Vs) profiles fromthe proposed inversion algorithmagreewell with independently measured Vs data.

Original language	English
Pages (from-to)	2156-2169
Number of pages	14
Journal	ASCE J Soil Mech Found Div
Volume	139
Issue number	12
DOIs	https://doi.org/10.1061/(ASCE)GT.1943-5606.0000939
Publication status	Published - 2013
Externally published	Yes

ASJC Scopus Subject Areas

General Environmental Science
Geotechnical Engineering and Engineering Geology

Keywords

Dispersion curves
Forward model
Generalized reduced gradient
Global inversion
Rayleigh surface wave
Shear wave
Weighted average velocity

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10.1061/(ASCE)GT.1943-5606.0000939

Cite this

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title = "Global inversion of surface wave dispersion curves based on improved weighted average velocity method",

abstract = "In this paper, a global inversion algorithm for surface wave dispersion curve is proposed. An improved weighted average velocity (Wave) method is used as the forward model and generalized reduced gradient (GRG) method is used for minimization of misfit function. The development of the proposed algorithm is detailed. The proposed inversion algorithm is then used to invert synthetic Rayleigh wave dispersion curves of known one-dimensional (1D) soil profiles and results show that the initial soil profile population size of 10,000 is sufficient to obtain the global minimum solution. Finally, field Rayleigh wave dispersion curves are inverted to show that the 1D shear wave velocity (Vs) profiles fromthe proposed inversion algorithmagreewell with independently measured Vs data.",

keywords = "Dispersion curves, Forward model, Generalized reduced gradient, Global inversion, Rayleigh surface wave, Shear wave, Weighted average velocity",

author = "Leong, {E. C.} and Aung, {A. M.W.}",

year = "2013",

doi = "10.1061/(ASCE)GT.1943-5606.0000939",

language = "English",

volume = "139",

pages = "2156--2169",

journal = "ASCE J Soil Mech Found Div",

issn = "1090-0241",

publisher = "American Society of Civil Engineers (ASCE)",

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TY - JOUR

T1 - Global inversion of surface wave dispersion curves based on improved weighted average velocity method

AU - Leong, E. C.

AU - Aung, A. M.W.

PY - 2013

Y1 - 2013

N2 - In this paper, a global inversion algorithm for surface wave dispersion curve is proposed. An improved weighted average velocity (Wave) method is used as the forward model and generalized reduced gradient (GRG) method is used for minimization of misfit function. The development of the proposed algorithm is detailed. The proposed inversion algorithm is then used to invert synthetic Rayleigh wave dispersion curves of known one-dimensional (1D) soil profiles and results show that the initial soil profile population size of 10,000 is sufficient to obtain the global minimum solution. Finally, field Rayleigh wave dispersion curves are inverted to show that the 1D shear wave velocity (Vs) profiles fromthe proposed inversion algorithmagreewell with independently measured Vs data.

AB - In this paper, a global inversion algorithm for surface wave dispersion curve is proposed. An improved weighted average velocity (Wave) method is used as the forward model and generalized reduced gradient (GRG) method is used for minimization of misfit function. The development of the proposed algorithm is detailed. The proposed inversion algorithm is then used to invert synthetic Rayleigh wave dispersion curves of known one-dimensional (1D) soil profiles and results show that the initial soil profile population size of 10,000 is sufficient to obtain the global minimum solution. Finally, field Rayleigh wave dispersion curves are inverted to show that the 1D shear wave velocity (Vs) profiles fromthe proposed inversion algorithmagreewell with independently measured Vs data.

KW - Dispersion curves

KW - Forward model

KW - Generalized reduced gradient

KW - Global inversion

KW - Rayleigh surface wave

KW - Shear wave

KW - Weighted average velocity

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DO - 10.1061/(ASCE)GT.1943-5606.0000939

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JO - ASCE J Soil Mech Found Div

JF - ASCE J Soil Mech Found Div

IS - 12

ER -

Global inversion of surface wave dispersion curves based on improved weighted average velocity method

Abstract

ASJC Scopus Subject Areas

Keywords

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