Strong Ground Motion Simulation of the 1976 Ninghe, China Earthquake

概要

論文の詳細を見る
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.
東京大学地震研究所,Earthquake Research Institute, University of Tokyo,地震研究所の論文
1986-08-04