摘要
断层网络可视为一浅源构造地震的蕴震系统。地震前兆是该系统在演化过程中所表现出来的复杂的整体动态行为，是蕴震系统自组织演化的构造微动态。本文从信息合成观点出发，提出了方向信息合成方法（ＤｉｒｅｃｔｉｏｎＩｎｆｏｒｍａｔｉｏｎＳｙｎｔｈｅｓｉｓ）。对京、津、唐地区５０条跨断层地形变观测时间序列的计算表明：断层网络活动的方向特征（相对张、压、扭动等）临震前出现了运动方式（方向）群体优势异常；该异常可能具有可重复性，该方向特征的时空演化可视为一个自组织过程。
Fault network can be seen as a seismogenic system of shallow source.The earthquake precursor is the integral dynamic behavior during the system evolution process and the tectonic micro-dynamic behavior during the self-organization evolution of the seismogenic system as well. In this paper,on the basis of Information Synthesis of Seismogenic System(ISSS) the author presents the method of Direction Information Synthesis(DIS).The calculation results from 50 time series of deformation measurements across faults in Beijin-Tianjing-Tangshan region show that the direction charactristics (relative tension, compression and relative twist,etc.) of fault network movement may present obvious integral abnormality of motion form before earthquake. The abnormality may be repeated and the direction speciality time-space evolution can be seen as a self-organization process.
出处
《地壳形变与地震》
CSCD
1994年第4期24-28,共5页
Crustal Deformation and Earthquake
关键词
断层网络
构造微动态
信息合成
自组织
地震前兆
fault network,tectonic micro-dynamic information synthesis integral prominence abnormality,self-organization
