地电阻率的多年动态和中期异常判定方法的优化研究  

Optimization for Multi-years Dynamic Change and Medium-term Anomaly Judgment of Ground Resistivity

作　　者：陈建国[1] 张学民[1] 秦清娟[1] 王秀文[2] 

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

出　　处：《山西地震》2004年第3期25-28,共4页Earthquake Research in Shanxi

摘　　要：叙述了地电阻率变化的主要影响因素和多年动态变化特征。根据地电阻率中期异常标志,研制了提取地电阻率强震中期异常的3种数学处理方法,对其方法的特点做了简要分析。以河北张北6.2级地震为例,应用所述3种方法,对河北昌黎台北南道地电阻率作了计算。结果表明,不同分析方法所得出的异常,彼此之间有较强的可比性,似可为地震综合预报提供一套有效的强震中期异常判定方法。Main factors to influence ground resistivity variation and characteristics of multi-years dynamic change are introduced.Based on diagnostic values of medium-term anomaly of the ground resistivities,3 mathematical methods for extracting medium-term anomalies of the strong earthquake from ground resistivities are worked out.Brief introductions for the features of these 3 methods.Taking Zhangbei,Hebei,earthquake of M6.2 as an example,calculations of ground resistivities of N-S component of Changli Station,Hebei,are made by using all those 3 methods.The results show that there is better comparability among the anomalies got from different methods,which may be taken as a effective method for judging medium term anomalies of the strong earthquake in multi-disciplinary earthquake prediction.

关 键 词：地电阻率 中期异常 动态特征 同一化 地震综合预报 

分 类 号：P315.75[天文地球—地震学]