张北-尚义6.2级地震北京地下水位井网动态异常特征  

DYNAMIC CHARACTERISTICS OF UNDERGROUND WATER-LEVEL ANOMALIES OF BEIJING WELL NETWORK AROUND ZHANGBEI Ms 6.2 EARTHQUAKE

作　　者：孙振 孙天林[1] 简春林[1] 

机构地区：[1]中国地震局分析预报中心,中国北京100036

出　　处：《地震》1998年第4期367-367,共1页Earthquake

摘　　要：1998年1月10日张北-尚义6．2级地震前，北京地下水位监测网部分井孔观测到一组由趋势到短临前兆异常，并根据这些异常点的分布及不同阶段的异常表坎特征和发展过程，进一步分析孕震过程中震源区应力-应变积累与水位动态的内在联系，得出有益的启示，对地震预报前兆研究具有一定的参考意义。Before the Ms 6. 2 earthquake on January 10, 1998, in Zhangbei , Hebei Province, a group of precursory anomalies developed from tendency anomalies to short-term and im-pending precursors were observed in some wells within Beijing water well network. The distribution of these anomalies and their expression characteristics and development pro-cesses during different stages are described in detail in this paper. The results show that the internal relatlonship between the dynamic water-level features and the accumulative processes of stress and strain during the seismogenic processes in the source region exists ,and gives helpful enlightening guidance for seismologists. Therefore, this study has a cer-tain reference value for precursory researches of earthquake prediction.

关 键 词：地下水位异常 异常特征 前兆现象 地震前兆 北京 

分 类 号：P315.7[天文地球—地震学]