NDLI: Site effect assessment using KiK-net data: part 2—site amplification prediction equation based on f0 and Vsz

Content Provider	Springer Nature Link
Author	Héloïse, Cadet Bard, Pierre Yves Duval, Anne Marie Bertrand, Etienne
Copyright Year	2011
Abstract	This paper presents empirical correlations between amplification factors and simple site parameters derived from a large subset of the KiK-net data. The amplification factor is estimated from the ratios between the surface and down-hole horizontal response spectra, corrected for the varying depths and impedance of the down-hole sites (Cadet et al. in Site effect assessment using KiK-net data—part 1—a simple correction procedure for surface/downhole spectral ratios, 2011). Several site parameters are selected on the basis of their simplicity and availability at relatively low cost. They are the shallow time-average velocities VSZ, with z equal to 5, 10, 20 and 30 m, and the fundamental frequency f0. The amplification factors are then correlated with each of the individual site parameters; four other “twin-parameter”—couples (f0, VSZ)—are also considered and the correlation with amplification factors is performed through a normalization of the frequencies by each site fundamental frequency. The quality of the correlations is given by a misfit compared with the original data variance. The largest variance reduction is obtained with twin-parameter characterizations, out of which the couple (f0, VS30) proves to provide the lower misfit. The performance of single parameter correlations is relatively lower; however, the best single parameter proves to be the fundamental frequency, which provides smaller misfit than the Vsz parameters. A comparison is also performed with the amplification factors recommended in European regulations, showing that it is possible right now to significantly improve both the site characterization criteria and the associated amplification factors, for use in building codes and microzonation studies.
Starting Page	451
Ending Page	489
Page Count	39
File Format	PDF
ISSN	1570761X
Journal	Bulletin of Earthquake Engineering
Volume Number	10
Issue Number	2
e-ISSN	15731456
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-07-06
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Site effects Site amplification prediction equation Vs30 Vsz proxies Fundamental resonance frequency Eurocode 8 KiK-net Geophysics/Geodesy Geotechnical Engineering & Applied Earth Sciences Hydrogeology Environmental Engineering/Biotechnology Structural Geology Civil Engineering
Content Type	Text
Resource Type	Article
Subject	Building and Construction Geophysics Geotechnical Engineering and Engineering Geology Civil and Structural Engineering

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Erratum to: Site effect assessment using KiK-net data: part 2—site amplification prediction equation based on f0 and Vsz

Erratum to: Site effect assessment using KiK-net data: part 2—site amplification prediction equation based on f0 and Vsz

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Site effect assessment using KiK-net data: part 2—site amplification prediction equation based on f0 and Vsz

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Site effect assessment using KiK-net data: part 2—site amplification prediction equation based on f0 and Vsz