摘要
采用非均匀介质中能量的非线性积累过程，模拟唐山７．８级和大同６．１级地震的前兆场演化，发现能量主要聚集在介质参数发生改变的地区，而且能量的增强呈现聚集─恢复─聚集的过程，说明地震孕育过程中出现的各种前兆特征，与地壳内能量的非线性聚集有关．
The evolution process of precursory fields for the Tangshan M 7. 8 earthquake and the Da-tong M 6.1 earthquake was simulated by using the process of nonlinear accumulation of energy ininhomogeneous media. The results show that the energy was mainly concentrated in medium ar-eas where the parameters of medium changed and the energy increases in the concentration-re-covery─concentration process. Such phenomenon indicates that various precursory features ob-served during the seismogenic process seem to be related with the nonlinear concentration of ener-gy in the crust.
出处
《国际地震动态》
1995年第12期10-14,共5页
Recent Developments in World Seismology
基金
地震科学联合基金
关键词
地震
振荡模型
地震研究
唐山地震
Tangshan earthquake
nonlinearity
oscillation of regional accumulated energy
