河北张北M6.2地震前怀来_4井水汞短期异常特征  

Study on Characteristics of Short-term Anomaly in Mercury in Groundwaterfrom Well No.4 in Huailai before Zhangbei Earthquake of M6.2,Hebei

作　　者：宋晓冰[1] 张常慧[1] 李海孝[1] 

机构地区：[1]河北省地震局怀来地震台,河北怀来075400

出　　处：《山西地震》2005年第2期13-14,共2页Earthquake Research in Shanxi

摘　　要：采用旬变化率新方法分析了河北怀来4井水汞观测资料。结果表明,河北张北M6.2地震前怀来4井出现了明显的水汞短期异常变化。用旬变化率新方法对怀来4井水汞短期异常的特征作了分析。认为,水汞的短期异常显示是有普遍性的,在判定异常时必须采用合适的数学分析方法方能奏效。Observed data of mercury in groundwater from the well No.4 in Huailai,Hebei,is analyzed by using a new ten-day rate of change method.The result shows that obvious short-term anomaly in mercury in groundwater from well No.4 in Huailai turned up before Zhangbei earthquake of M6.2,Hebei.Characteristics of short-term anomaly in mercury in groundwater from well No.4 in Huailai are analyzed by using the new ten-day rate of change method. The authors think that short-term anomaly in mercury in groundwater will generally turn up.To judge such kind of anomaly,some suitable mathematical method must be taken.

关 键 词：短期异常 水汞 变化率 

分 类 号：P315.724[天文地球—地震学]