S wave inelastic attenuation and site effect in the northern Tianshan area

In this paper, according to the relationship of observation spectrum with source spectrum, travel-path attenuation factor and site effect, we use the digital seismic data of moderate-small earthquakes to invert the soft rock site effect and S wave inelastic attenuation under the constraint of site e...

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Veröffentlicht in:Acta seismologica sinica 2007-03, Vol.20 (2), p.188-193
1. Verfasser: 姜慧 高孟潭 俞言祥 唐丽华
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description In this paper, according to the relationship of observation spectrum with source spectrum, travel-path attenuation factor and site effect, we use the digital seismic data of moderate-small earthquakes to invert the soft rock site effect and S wave inelastic attenuation under the constraint of site effect, and determine the parameters of path and site. The parameters obtained by this method exclude the topographic effect of seismic stations, and truly reflect the seismic effect of free soft rock sites and the S wave inelastic attenuation in the studied region. The average soft rock site effect is about 1.5 times in the frequency domain of 2-4 Hz and the S wave quality factor is obtained as Qs=278f0.346, which can be directly applied to the stochastic modeling of ground motions in the studied region.
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identifier ISSN: 1000-9116
ispartof Acta seismologica sinica, 2007-03, Vol.20 (2), p.188-193
issn 1000-9116
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1993-1344
1867-8777
language eng
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source Alma/SFX Local Collection; SpringerLink Journals - AutoHoldings
subjects Earthquakes
Ground motion
Rocks
Seismic activity
Spectrum analysis
S波品质因数
Wave power
场址效应
天山北部地区
非弹性衰减
title S wave inelastic attenuation and site effect in the northern Tianshan area
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