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.
出处
《地震》
CSCD
北大核心
1998年第4期367-367,共1页
Earthquake
关键词
地下水位异常
异常特征
前兆现象
地震前兆
北京
Groundwater level anomaly, Anomalous character,Precursor phenomcna, Zhangbei earthquake
