震后异常与新地震异常的识别方法研究  

METHOD STUDY ON DISTINGUISHING ANOMALIES OF POST-EARTHQUAKES AND FORTHCOMING EARTHQUAKES

作　　者：陈立德[1] 罗平[1] 傅虹[1] 郭大庆[2] 毛可[3] 傅德川 赵新平[5] 谢华章[6] 李友才 

机构地区：[1]云南省地震局,中国昆明650041 [2]国家地震局分析预报中心,中国北京100036 [3]国家地震局兰州地震研究所,中国兰州730000 [4]河北省地震局,中国石家庄050021 [5]山西省地震局,中国太原030002 [6]江苏省地震局,中国南京210014 [7]四川省地震局,中国成都610041

出　　处：《地震》1995年第S1期125-135,共11页Earthquake

基　　金：国家地震局85-04-02-05二级课题研究成果

摘　　要：提出了孕震系统宏观层次上的单元体应力水平群体涨落模型,并以此作为解释异常场和震后效应、震后新异常的物理基础,以青海共和、甘肃天祝等地区为对象,给出了该模型的有关实验结果。讨论了应力场扰动力源类别及影响范围。重点研究了震后异常的分类,并讨论了各类震后异常与新地震的关系。指出继承性异常、继承性新异常(正反M、N和正弦波型)和新异常,异常群体再次出现高值及震后出现新的异常集中区等,均可作为还有新地震发生的判据和指标。In this paper the authors have presented the swarm fluctuation model of unit stress level in seismogenic system from the macroscopic scale, which is used as physical bases to explain the anomaly field, effect of post-earthquakes, and new anomalies after earthquakes. Taking the Gonghe region, Qinghai Province and Tianzhu region, Gansu Province as the objects, the relevant experimental results of the model are given. Also the classification and affected range of force sources from disturbance of stress field have been discussed. The classification of post-seismic anomalies is mainly studied,and the relation between all types of post-seismic anomalies and forthcoming earthquakes is also discussed. It is pointed out that the inherited anomalies, new inherited anomalies (types of positive and negative M, N and sine wave) and new anomalies, re-occurrence of high value for anomalous swarms, and new concentration areas of post-seismic anomalies could be taken as the criteria and indexes of the forthcoming earthquakes.

关 键 词：异常 识别方法 单元体应力水平 群体涨落 扰动力源 同震效应 震后效应 

分 类 号：P315.7[天文地球—地震学]