掲載雑誌（和）：
日本地震工学シンポジウム論文集
Vol：
8-1巻
年：
1990年
頁：
427-432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）：
Takanori HARADA, Tomoki FUGASA
タイトル（英）：
SEISMIC RESPONSE CHARACTERISTICS OF STOCHASTIC GROUND
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抄録（英）：
In order to account for the stochastic nature of free-field earthquake ground motions in the time and space domain, the earthquake responses of a stochastic soil layer on rigid rock is analysed where the soil properties are stochastically varying in lateral directions. From the analysis, a closed form analytic expression of the frequency-wavenumber spectrum, which provides information concerning the correlational characteristics of earthquake motions, is established. It is found from the characteristics of the frequency-wavenumber spectrum established in this study that the free-field ground motion displacement is highly coherent in low frequency range while it tends to become incoherent in high frequency range.
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委員会論文集