大同－阳高两次地震前的大气电场异常特征  

Characteristics of the Atmospheric Electric Field Anomaly Before two Datong-Yanggao Earthquakes

作　　者：郝建国[1] 潘怀文[1] 李德瑞[1] 刘小芹[1] 

机构地区：[1]国家地震局地球物理研究所,国家地震局科技监测处

出　　处：《山西地震》1994年第1期47-51,共5页Earthquake Research in Shanxi

摘　　要：通过对大同－阳高发生的两次震中相近的６级左右地震的震例分析及多年来观测研究的结果得出：近场地震前观测到的大气电场负异常现象，不仅形态特殊，易于观测，持续时间长，而且具有很好的规律性和可重复性。指出，由于地震孕育过程的复杂性及介质结构的不均匀性，只有进一步开展异常信息与地震时、空、强３要素的内在物理关系研究，才有可能作出正确判断，在地震预报的实践中取得较好效果。Through analysis for the examples of tow Datong-Yanggao eartkquakes with about M6.0 and the ob-servatory data for many years,the obtained result is that not only the shpes of the observatory nagative atmo-spheric electric field anomalies beforenear-field earthquakes are special,the anomalies are easy observed,andtheduration times are long,but also have regularity and repeatability,The paper suggests that as seisn1ogenicprocesses have complexity and medium struetres are anisotropic, it is necessary to analyze the abonormal in-formation:and the physical relations with the three-factor of earthquake in order to rr1ake correct judgementand obtain better effects in earthquake prediction practice.

关 键 词：地震 大气电场 地震预报 异常特征 

分 类 号：P315.7[天文地球—地震学]