The strong ground motions observed during the Nov. 15, 1976 Ninghe, China earthquake (M=6.9) have been simulated by the finite difference method. By analyzing observed accelerograms, an acceleration source function of impulsive shape is assumed for synthesizing observed accelerograms. The effects of lateral heterogeneity of ground structures are taken into account in this study. The simulated results show that the energy was released in a small region surrounding the hypocenter in the Ninghe earthquake, the strike slip was predominant on the fault and the maximum acceleration might be over Ig at the hypocenter. Even with a relatively simple rupture process, ground motions become complicated due to reflection and scattering of seismic waves, especially in laterally heterogeneous ground structure.
雑誌名
東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo
巻
61
号
1
ページ
97 - 127
発行年
1986-08-04
ISSN
00408972
書誌レコードID
AN00162258
フォーマット
application/pdf
日本十進分類法
453
出版者
東京大学地震研究所
出版者別名
Earthquake Research Institute, University of Tokyo
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Strong Ground Motion Simulation of the 1976 Ninghe, China Earthquake
ji0611003.pdf
(1.71MB)
