内蒙两次5.9级地震与前兆异常特征的关系研究  

STUDY ON THE RELATION BETWEEN NEIMENG M_S 5.9 EATHQUAKE AND THE PRECURSORY ANOMALY CHARACTERISTICS

作　　者：王玉莹[1] 白启光[2] 张建一[1] 侯万凯[1] 王海燕[1] 赵永志[2] 

机构地区：[1]辽宁省地震局,辽宁沈阳110031 [2]朝阳地震台,辽宁朝阳122000

出　　处：《东北地震研究》2004年第4期16-21,共6页Seismological Research of Northeast China

摘　　要：以辽宁省长期丰富的地震前兆资料为基础,研究了内蒙两次5 9级地震与内蒙、东北地区前兆特征的关系。结果表明内蒙地震前前兆异常特征主要有:(1)前兆异常在时间上伴随内蒙巴林左旗5 9级地震事件的发生和结束呈阶段性起伏,空间上存在特征迁移;(2)中短期前兆异常阶段中以地形变为主体,在短临阶段地下流体和地磁出现异常。On the basis of the much precursory information in Liaoning province,the relation between the two times M_S 5.9 earthquakes and the precusory characteristics in Neimeng and Northeast area was researched.The results showed that there are some precursory anomaly characteristics before the events:(1)precursory anomaly stage rising and falling on the time was accompanied by the occurence and termination of M_S5.9 earthquake,and it has the migration characteristics in the space; (2) the drformation anomaly was mainly observed in the mid-short term precursory anomaly stage,and the anomalies of the underground fluid and geomagnetism were observed in the short-imminent stage.

关 键 词：5.9级地震 前兆异常 地形变 前兆特征 地磁 地下流体 地震前兆 内蒙 巴林左旗 东北地区 

分 类 号：P315[天文地球—地震学] F426.7[天文地球—固体地球物理学]