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  1. 防災科研関係論文

An efficient method to compute the dynamic response of a fluid-filled crack

https://nied-repo.bosai.go.jp/records/4757
https://nied-repo.bosai.go.jp/records/4757
394601db-c970-45c7-814e-d36824787a54
Item type researchmap(1)
公開日 2023-03-30
タイトル
言語 en
タイトル An efficient method to compute the dynamic response of a fluid-filled crack
言語
言語 eng
著者 Mare Yamamoto

× Mare Yamamoto

en Mare Yamamoto

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Hitoshi Kawakatsu

× Hitoshi Kawakatsu

en Hitoshi Kawakatsu

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抄録
内容記述タイプ Other
内容記述 The vibration of a fluid-filled crack is considered to be one of the most plausible source mechanisms for the long-period events and volcanic tremors occurring around volcanoes. As a tool for the quantitative interpretation of source process of such volcanic seismic signals, we propose a method to numerically simulate the dynamic response of a fluid-filled crack. In this method, we formulate the motions of the fluid inside and the elastic solid outside of the crack, using boundary integrals in the frequency domain and solve the dynamic interactions between the fluid and the elastic solid using the point collocation method. The present method is more efficient compared with the time-domain finite difference method, which has been used in simulations of a fluid-filled crack and enables us to study the dynamics of a fluid-filled crack over a wide range of physical parameters. The method also allows us direct calculation of the attenuation quality factor of the crack resonance, which is an indispensable parameter for estimating the properties of the fluid inside the crack. The method is also designed to be flexible to many applications, which may be encountered in volcano seismology, and thus, extensions of the method to more complicated problems are promising.
言語 en
書誌情報 en : GEOPHYSICAL JOURNAL INTERNATIONAL

巻 174, 号 3, p. 1174-1186, 発行日 2008-09
出版者
言語 en
出版者 WILEY-BLACKWELL
ISSN
収録物識別子タイプ ISSN
収録物識別子 0956-540X
DOI
関連識別子 10.1111/j.1365-246X.2008.03871.x
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