V Determination from Steady State Rayleigh Wave Method

Tokimatsu, Kohji; Kuwayama, Shinichi; Tamura, Shuji; Miyadera, Yasuo

doi:10.3208/sandf1972.31.2_153

Cited by 48 publications

(13 citation statements)

References 6 publications

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“…Scherbaum et al (2003) proposed a joint inversion of dispersion curve and horizontal-to-vertical (H/V) ratios (Nakamura, 1989) of ambient noise. In general, all studies showed that these S-wave velocity profiles were in good agreement with those derived by down-hole or crosshole techniques (Tokimatsu et al, 1991). Additionally, compared to other surface wave-based methods that rely on artificial sources (e.g.…”

Section: Introductionmentioning

confidence: 77%

“…In this study, the linearized inversion (e.g. Tokimatsu et al, 1991), the simplex downhill method (Nelder and Mead, 1965), and the non-linear optimization method that uses a genetic algorithm (e.g. Goldberg, 1989) were considered.…”

Section: Inversion Methodsmentioning

confidence: 99%

“…A complete description of the methods, their advantages and shortcoming, is well beyond the scope of this paper and can be found in the references listed. Tokimatsu et al, 1991 andXia et al, 1999) The inverse problem was solved using Singular Value Decomposition (SVD, Press et al, 1986) and the RMS of differences between observed and theoretical phase velocities was minimized. Because of the non-linearity of the problem the inversion was repeated until the RMS ceased to change significantly.…”

Section: Inversion Methodsmentioning

confidence: 99%

“…Horike, 1985;Hough et al, 1992;Ohori et al, 2002;Okada, 2003) as well as single station measurements at the surface and in boreholes (e.g. Tokimatsu et al, 1991;Arai and Tokimatsu, 2000;Fäh et al, 2001). Scherbaum et al (2003) proposed a joint inversion of dispersion curve and horizontal-to-vertical (H/V) ratios (Nakamura, 1989) of ambient noise.…”

Section: Introductionmentioning

confidence: 97%

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S-wave Velocity Profiles for Earthquake Engineering Purposes for the Cologne Area (Germany)

Parolai

Richwalski

Milkereit

et al. 2006

Bull Earthquake Eng

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Local S-wave velocity-depth profiles are a key factor in seismic hazard assessment, as they allow the amplification potential of the sedimentary cover to be evaluated. Ambient seismic noise is mainly composed of surface waves, and therefore contains vital information about the S-wave velocity structure, allowing polarization or dispersion curves to be obtained from single station or array noise recordings. At two sites in the area of Cologne, Germany, the extended spatial correlation method was applied to such recordings and apparent phase velocity curves in the frequency range of interest for earthquake engineering were obtained. Using this data, a linearized inversion, the simplex downhill method, and a genetic algorithm yielded similar S-wave profiles. However, the latter method is recommended since it is less dependent upon a good starting model. Importantly, the presence of low-velocity layers in the Cologne area made it necessary to consider in the frequency range of interest higher modes in the inversion procedures. Finally, independent information on the total thickness of the sedimentary cover permitted the estimation of a 2D S-wave velocity profile crossing the Cologne area. Here, the H/V ratio inversion using 20 single-station noise recordings was used, with the results in good agreement with a geological profile.

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Section: Introductionmentioning

confidence: 77%

Section: Inversion Methodsmentioning

confidence: 99%

Section: Inversion Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

See 2 more Smart Citations

S-wave Velocity Profiles for Earthquake Engineering Purposes for the Cologne Area (Germany)

Parolai

Richwalski

Milkereit

et al. 2006

Bull Earthquake Eng

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show abstract

“…(e.g. Tokimatsu et al 1991, Fäh et al 2001, Arai and Tokimatsu 2004 Borcherdt (1992) was based on data from the western USA, and so were the first papers discussing advantages (Anderson et al 1996) and disadvantages (Wald and Mori 2000) of the method. Outside the region where the method was developed, some doubts arose about the capability of v s 30 to predict amplification in deep basins (Park and Hashash 2004) and in other tectonically active regions (Stewart et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of proxies for seismic site conditions in large urban areas: The example of Santiago de Chile

Pilz¹,

Parolai²,

Picozzi³

et al. 2011

Physics and Chemistry of the Earth, Parts A/B/C

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Characterizing the local site response in large cities is an important step towards seismic hazard assessment. To this regard, single station seismic noise measurements were carried out at 146 sites in the northern part of Santiago de Chile. This extensive survey allowed the fundamental resonance frequency of the sedimentary cover, derived from horizontal-tovertical (H/V) spectral ratios, to be mapped. By inverting the spectral ratios under the constraint of the thickness of the sedimentary cover, known from previous gravimetric measurements, local S-wave velocity profiles have been retrieved. After interpolation between the individual profiles, the resulting high resolution 3D S-wave velocity model allows the entire area, as well as deeper parts of the basin, to be represented in great detail.

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Numerical Evaluation of Cyclic Response of Shallow Foundation Resting on Liquefiable Soil

Kumari

Suman

2018

Proceedings of GeoShanghai 2018 International Conference: Advances in Soil Dynamics and Foundation Engineering

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V Determination from Steady State Rayleigh Wave Method

Cited by 48 publications

References 6 publications

S-wave Velocity Profiles for Earthquake Engineering Purposes for the Cologne Area (Germany)

S-wave Velocity Profiles for Earthquake Engineering Purposes for the Cologne Area (Germany)

Evaluation of proxies for seismic site conditions in large urban areas: The example of Santiago de Chile

Numerical Evaluation of Cyclic Response of Shallow Foundation Resting on Liquefiable Soil

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