掲載雑誌（和）：	日本地震工学シンポジウム論文集
Vol：	11巻
年：	2002年
頁：	521-526頁
著者（和）：	室野　剛隆，村上　昌彦，佐藤　忠信
タイトル（和）：	断層近傍地震動の位相特性の経験的なモデル化
抄録（和）：	-
キーワード（和）：	群遅延時間，断層近傍地震動，回帰モデル
掲載雑誌（英）：	THE EARTHQUAKE ENGINEERING SYMPOSIUM PROCEEDINGS
著者（英）：	Yoshitaka Murono, Masahiko Murakami, Tadanobu Sato
タイトル（英）：	EXPERIMENTAL MODELING OF PHASE SPECTRUM OF NEAR-FAULT EARTHQUAKE MOTION
抄録（英）：	Modeling the phase of earthquake ground motion is required in order to synthesize design ground motion. A simple method is presented for modeling the phase characteristics of earthquake motion using the concept of group delay time and wavelet analysis. Using the data set of observed near-fault earthquake motions, we calculated the group delay time of each earthquake motion on each compact support of the mother wavelet. Because of the fluctuating nature of the group delay time on each support, the mean of the group delay times and standard deviation were calculated. The group delay time at the near source region is strongly affected by a rupture directivity of the fault. We therefore derive here regression equations for mean and standard deviation of group delay that can take the rupture directivity into account. Simulated sample phase spectra were used to simulate earthquake motions assuming that Fourier amplitude spectra are given at observation stations. Their time histories are compared with the observed ones.
キーワード（英）：	group delay time, near fault earthquake motion, regression equation
記事区分：	-
区分：	委員会論文集