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Empirical analysis of path effects on prediction equations of pseudo-velocity response spectra in northern Japan
https://nied-repo.bosai.go.jp/records/4068
https://nied-repo.bosai.go.jp/records/406868d9905f-7c4f-4dc6-945c-9925e2874a3a
Item type | researchmap(1) | |||||||||||
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公開日 | 2023-03-30 | |||||||||||
タイトル | ||||||||||||
言語 | en | |||||||||||
タイトル | Empirical analysis of path effects on prediction equations of pseudo-velocity response spectra in northern Japan | |||||||||||
言語 | ||||||||||||
言語 | eng | |||||||||||
著者 |
Yadab P. Dhakal
× Yadab P. Dhakal
× Nobuo Takai
× Tsutomu Sasatani
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抄録 | ||||||||||||
内容記述タイプ | Other | |||||||||||
内容記述 | We study path effects on prediction equations of pseudo-velocity response spectra (natural period of 0.1-5.0 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 source-to-site distance into two distances at the attenuation boundary beneath the volcanic front. The boundary is considered to separate the relatively high Q fore-arc side mantle wedge (FAMW) from the low Q back-arc side mantle wedge (BAMW). Strong motion records (hypocentral distances less than 300 km) from interplate and intraslab events with Mw 5.1-7.3 are used. Regression analysis results show that the standard errors are significantly reduced by the second prediction equation at short periods (0.1-0.5 s), whereas the difference in standard errors from both prediction equations is negligible at intermediate and long periods. The Qs values (quality factor for S-wave) converted from two anelastic attenuation coefficients for the second prediction equation are remarkably similar to the path-averaged 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 pseudo-velocity 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. 443-461 |
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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 | 0098-8847 | |||||||||||
DOI | ||||||||||||
関連識別子 | 10.1002/eqe.952 |