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Empirical analysis of path effects on prediction equations of pseudovelocity response spectra in northern Japan
https://niedrepo.bosai.go.jp/records/4068
https://niedrepo.bosai.go.jp/records/406868d9905f7c4f4dc6945c9925e2874a3a
Item type  researchmap(1)  

公開日  20230330  
タイトル  
言語  en  
タイトル  Empirical analysis of path effects on prediction equations of pseudovelocity response spectra in northern Japan  
言語  
言語  eng  
著者 
Yadab P. Dhakal
× Yadab P. Dhakal
× Nobuo Takai
× Tsutomu Sasatani


抄録  
内容記述タイプ  Other  
内容記述  We study path effects on prediction equations of pseudovelocity response spectra (natural period of 0.15.0 s) in northern Japan, where heterogeneous attenuation structure exists. The path effects have been examined by comparing the regression analysis results for two different prediction equations. The first equation consists of a single term of anelastic attenuation conventionally. The second equation consists of two terms of anelastic attenuation in consideration of the heterogeneous attenuation structure. In the second equation, we divide a sourcetosite distance into two distances at the attenuation boundary beneath the volcanic front. The boundary is considered to separate the relatively high Q forearc side mantle wedge (FAMW) from the low Q backarc side mantle wedge (BAMW). Strong motion records (hypocentral distances less than 300 km) from interplate and intraslab events with Mw 5.17.3 are used. Regression analysis results show that the standard errors are significantly reduced by the second prediction equation at short periods (0.10.5 s), whereas the difference in standard errors from both prediction equations is negligible at intermediate and long periods. The Qs values (quality factor for Swave) converted from two anelastic attenuation coefficients for the second prediction equation are remarkably similar to the pathaveraged Qs values for the FAMW and BAMW by other studies using spectral inversion method. From these findings, we conclude that the path effects on the prediction equation of pseudovelocity response spectra are satisfactorily accomplished by the second prediction equation. Copyright (C) 2009 John Wiley & Sons, Ltd.  
言語  en  
書誌情報 
en : EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS 巻 39, 号 4, p. 443461 

出版者  
言語  en  
出版者  JOHN WILEY & SONS LTD  
ISSN  
収録物識別子タイプ  ISSN  
収録物識別子  00988847  
DOI  
関連識別子  10.1002/eqe.952 