地下流体中期和中短期前兆异常的四种判定方法  

Four kinds of judge methods for medium term and medium-short term precursory anomaly of ground fluid

作　　者：范雪芳[1] 张淑亮[1] 王吉易[2] 

机构地区：[1]山西省地震局,山西太原030002 [2]河北省地震局,河北石家庄050021

出　　处：《地震》2002年第4期136-139,共4页Earthquake

摘　　要：根据地下流体地震前兆异常的特征,按照分析预报方法研究"同一化"的技术思路,从现有的分析预报方法中筛选出差分、从属函数、变差和变化率等4种方法,用以判定地下流体的中期异常。文中介绍了4种异常判定方法的计算式与做法,结合震例资料对这些方法进行了检验,其效果良好。Based on earthquake precursory anomaly characteristics of ground fluid, and according to the 'identity' technical thinking of analysis and Prediction method, four methods, such as difference, subordinate function, variational difference and change rate, are screened out from current analysis and prediction methods. This paper introduced calculation formula and methods for those four kinds of anomalyjudging method. Combining the earthquake case data, these methods are examined and the effect is good.

关 键 词：地下流体 中期异常 判定方法 地震前兆 差分 从属函数 

分 类 号：P315.723[天文地球—地震学]