大同地裂缝活动与大同-阳高地震的相关性研究  

Study on the Correlation between the Activities of Ground Fissures in Datong and the Datong-Yanggao Earthquake

作　　者：史双双[1,2] SHI Shuang-shuang(Shanxi Earthquake Agency,Taiyuan,Shanxi 030021,China;National Continental Rift Valley Dynamics Observatory of Taiyuan,Taiyuan,Shanxi 030025,China)

机构地区：[1]山西省地震局,山西太原030021 [2]太原大陆裂谷动力学国家野外科学观测研究站,山西太原030025

出　　处：《山西地震》2020年第1期10-13,20,共5页Earthquake Research in Shanxi

基　　金：山西省面上青年基金(201701D221019);山西面上自然基金(201901D111462);山西省地震局重点项目(SBK-2027)共同资助。

摘　　要：通过对1989-2016年形变量监测的数据分析,明确了大同机车厂地裂缝的活动规律,结合大同-阳高地震群活动性特征及震源机制分析,结果显示,大同机车厂地裂缝的发生和发展与大同-阳高地震活动,属同一构造应力场作用下不同构造方式的表现,具有一定的对应性,可分为剧烈拉张期、拉张期和压缩期。按照地裂缝活动与地震活动周期的对应规律,在今后一定时间内,该地裂缝将处于平静阶段。Based on the data analysis of the deformation monitoring from 1989 to 2016,this paper reveals the activity law of the ground fissures in Datong Locomotive Factory.Combined with the activity characteristics and focal mechanism analysis of the Datong-Yanggao earthquake group,the results show that the occurrence and development of the ground fissures in Datong Locomotive Factory and the Datong Yanggao earthquake activity belong to the performance of different structural modes under the same tectonic stress field,which has a certain extent corresponding,it can be divided into three stages:intense tension stage,tension stage and compression stage.According to the corresponding law between the activity of ground fissures and the period of seismicity,the ground fissures will be in a quiet stage in a certain period of time in the future.

关 键 词：地裂缝 地震活动性 大同-阳高地震 相关性 

分 类 号：P315.24[天文地球—地震学]