天津地区井水位固体潮观测的加卸载响应比变化与附近地震关系的研究

用加卸载响应比的方法,处理了天津地区2002年以来静海地震台井、宝坻地震台井、高村井和张道口地震台深井地下水位固体潮观测数据,并以加卸载响应比计算值的2倍方差作为异常判定指标,将天津及周边地区发生的M_L≥4.0地震参数与井水位固体潮响应比异常变化对比分析。结果表明:该区4口地下水位固体潮井的加卸载响应比异常变化与附近的地震活动有较好的对应关系。从而证明,利用井水位固体潮观测的加卸载响应比是一种能有效识别和提取地震前兆的方法。

Research on the relations between loading/unloading response ratio of earth tide of well water lever in Tianjin area and its neighboring earthquake actives

Using the method of load/unload response ratio , the observation data of the underground water of Jinghai, Baodi, Gaocun, Zhangdaokou Seismic Station in TianJin since 2002 are processed. Taking double the mean-square deviation of ealeulated value of loading/unloading response ratio as anomaly decision index, the corresponding relations in abnormal changes of underground water lever of response ratio and Mr ≥4.0 earthquake parameter occurred in Tianjin and its neighboring areas are analyzed. The results show that there are better corresponding relations between anomalous changes of load/unload response ratio of 4 underground water lever earth tide well in this area and its neighboring earthquake actives. It also proved that using load/unload response ratio of earth tide observation in well water lever is a method that could effectively identify and extract seismic precursory.