摘要
根据井孔水位的不同反应，分别采用不同方法对水位进行合水层应力的反演和异常信息的提取，并分别给出了对应地震的概率。对含水层应力异常展开了时空演化和频次分析，从而提出大同地震是区域应力场演化的结果，在这一演化过程中，井孔含水层应力异常具有异常空间分布的区域性、异常时间分布的阶段性和异常时空转移特征，以及异常频次与震中的一致性。
By different responses of well water level and by different methods, the inversion of aquifer stress for water level has been made,the anomalous information has been extracted and the corresponding earthquake probability has been given respectively.The analysis of time-space evolution and frequency of aquifer stress anomalies has been made,thus it is put forward that the Datong earthquake resulted from the regional stress field evolution,in this evolution process,the well aquifer stress anomalies showed regional characteristics in anomalous space distribution,stage characteristics in anomalous time distribution,transfer characteristics of anomalous time and space,and consistency of anomalies frequency and the epicenter.
出处
《华北地震科学》
北大核心
1996年第3期28-37,共10页
North China Earthquake Sciences
基金
"八.五"攻关项目
1990年地震科学联合基金
关键词
地下水位
地震预报
应力场
异常频次
地下水
groundwater level
earthquake prediction
stress field
anomalies frequency
