华北地区地震活动图象反映的地震构造特征

The Feature of Earthquake Tectontics Displayed by the Seismicity Pattern in North China

本文主要依据国家地震局分析预报中心出版的1:600万《中国地震震中分布图(M_L≥2,1970—1989)》,对华北地区地震活动基本图象进行了构造解释。由获取的中上地壳构造信息发现,本区具有清楚的共轭地震构造特征。并且指出,华北平原拗陷区的深、浅构造具有某些不协调特征。

Based on the 'CHINA DISTRIBUTION OF SElSMICITY,ML≥2 ,1970- 1989' compiled by the Centre for Analysis and Prediction,State Seismological Bureau,a tectonic interpretation of the basic seismicity pattern in North China was made. It was found from the tectonic information of upper and middle crust that the conjugate feature of earthquake tectonics is obvious in this region. It was pointed out that the deeper tectonics displays some features not consistent with that of the shallower tectonics in the depression area of North China.