掲載雑誌（和）：
日本地震工学シンポジウム論文集
Vol：
9-1巻
年：
1994年
頁：
475-480頁
著者（和）：
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タイトル（和）：
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抄録（和）：
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キーワード（和）：
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掲載雑誌（英）：
PROCEEDINGS OF THE JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM
著者（英）：
Shin KOYAMA, Kazuoh SEO, Takanori SAMANO
タイトル（英）：
EFFECT OF LARGE-SCALE IRREGULAR UNDERGROUND STRUCTURE ON RATHER-LONG PERIOD SEISMIC WAVE PROPAGATION
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抄録（英）：
In this study, the propagation of Love waves within large scale irregular underground structure was investigated. During the 1984 Nagano-ken-seibu earthquake, a rather-long period significant later phase appeared after one minute from the principal ground motion at Kumagaya JMA observatory. By means of investigation on several seismic records stored at Kumagaya and neighboring JMA observatories, this later phase is characteristics of Love wave which predominates in 6 sec, and the identical later phase is recorded during restricted earthquakes. In order to estimate the paths of these Love-waves, ray tracing for Love-waves is applied and two paths from the western part of Nagano prefecture to Kumagaya were estimated. One reaches Kumagaya directly and the other from NW direction through a narrow sedimentary valley.
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キーワード（英）：
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記事区分：
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区分
委員会論文集