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：	583-588頁
著者（和）：	笹谷　 努，森川　信之，前田　宜浩
タイトル（和）：	1993年釧路沖地震による強震動記録：震源及び伝播経路特性の評価
抄録（和）：	-
キーワード（和）：	スラブ内地震，1993 年釧路沖地震，アスペリティモデル，応力降下量，伝播経路特性
掲載雑誌（英）：	THE EARTHQUAKE ENGINEERING SYMPOSIUM PROCEEDINGS
著者（英）：	Tsutomu Sasatani, Nobuyuki Morikawa, Takahiro Maeda
タイトル（英）：	STRONG MOTION RECORDS FROM THE 1993 KUSHIRO-OKI EARTHQUAKE: EVALUATION OF THE SOURCE AND PATH EFFECTS
抄録（英）：	We have made a detailed analysis of strong motion records from the 1993 Kushiro-oki, intra-slab earthquake (Mw=7.6). First we evaluate an S-wave source spectrum of this event based on strong motion records at the fore-arc side of the volcanic front. The spectrum in the high-frequency range has extremely large amplitudes. Next we construct the source model using the empirical Green's function method. The source has three asperities with very high stress drops. Our estimates and previous studies show that the outer and inner fault parameters of this event have mutual relations proposed by Dan et al. (2002). Finally we investigate effects of the anomalous upper mantle structure on strong ground motions. The strong motion records at the back-arc side of the volcanic front show strong attenuation of short-period seismic waves.
キーワード（英）：	intra-slab earthquake, 1993 Kushiro-oki eathquake, asperity model, stress drop, path effect
記事区分：	-
区分：	委員会論文集