节点文献
华北地震图象和大震前中强震震源分布的性质
SEISMIC PATTERNS IN NORTHERN CHINA AND THE CHARACTERISTICS OF THE EPICENTRAL DISTRIBUTION OF THE MEDIUM STRONG EARTHQUAKES BEFORE THE LARGE EVENTS
【Author】 Tan Tjongkie Zheng Jianzhong Liu Jin Zou Ying (Institute of Geophysics,Chinese Academy of Sciences)
【机构】 中国科学院地球物理研究所;
【摘要】 本文主要讨论了华北地震图象和大震前中强震震源分布的性质,提出绘制有关地震正交网格的理论基础与方法,并对未来华北可能发生地震的地点进行了预测.
【Abstract】 In this paper,the seismic patterns in Northern China from 30°to 42°N latitude and 104°to 125°E longitude,and the characteristics of the epicentral distribution before large events are presented.The results suggest that:(1) the earthquakes in the region are mainly located in the orthogonal curvilinear network formed by the seismic belts;(2) the large earthquakes(M≥6) occurred mainly in the nodal regions ofthis grid;(3) the strike ofthe fracture planes of the earthquakes coincided with the directions of the seismic belts;(4) the pattern of medium strong earhtquakes(M≥4.7) prior to thirteen large earthquakes(M≥7) are analysed to be of three types:(a) mainly arranged along the two intersecting belts, (b) randomly distributed,(c) forming seismic gaps. A theoretical basis and rules for drawing the orthogonal grid is presented,and an idea for the prediction of the sites of future earthquakes in Northern China is suggested.
- 【会议录名称】 中国科学院地球物理研究所论文摘要集(1987)
- 【会议时间】1989-12-01
- 【分类号】P315.33