【摘要】 2008年5月12日汶川8.0级特大震发生前,云南昭通水富井水位测值出现长时间、大幅度趋势下降异常。在排除降雨影响后,通过异常形态、持续时间、观测点所处构造分析了该异常与汶川地震的关系,表明了在强震和大震孕震阶段存在水位长期异常。更多还原

【Abstract】 The value of water level in groundwater at Shuifu station in Zhaotong city Yunnan province appeared trend descend anomaly before the MS8.0 Wenchuan earthquake in May 12,2008.The anomaly shows characteristics with long-term anomaly and large extend.Obviated the infection of rainfall,the relationship between this anomaly and the Wenchuan earthquake is analyzed,which focused on the form of the anomaly,the duration of anomaly and the construction of the Shuifu station.The results show that long-term water level anomalies exist in the strong earthquakes seismogenic period.更多还原