SEISMIC PATTERN AND CONJUGATE EARTHQUAKE PREPARATION STRUCTURE IN NORTH CHINA

This paper is to explore tectonic movement model before strong shock to find some inforormation about tectonic movement for mid-range earthquake prediction.Based on the variation of mid-and micro-earthquake distribution before and after three earthquakes (M6) in North China (Tangsbang, Haicheng, and Helinggeer earthquakes), Conjugate earthquake genesis structural model has been obtained.Therefore, the elementary idea and prediction significance of the structure of controlling earthquake has been suggested.At the same time, it is pointed out that Zhangjiakou-Bohai fault Zone has earthquake genesis effect on Tangshang fault closure and control effect on earthquake distribution.In addition, seismo-structure of Tangshang earthquake has been discussed.