银川台石英摆倾斜仪异常特征及预测指标分析

Abnormal Characteristics of Quartz Pendulum Inclinometer and the Analysis of Prediction Indexes in Yinchuan Seismic Station

应用形态法、潮汐因子判别法对银川台石英摆倾斜仪观测资料进行系统分析,拟总结出银川台石英摆倾斜仪观测资料异常特征及其预测指标。分析结果显示:在银川台周边地区400km范围内发生的中强地震前,银川台石英摆倾斜仪观测资料存在明显的异常,同时在2001年昆仑山口西8.1级地震、2008年四川汶川8.0级地震前均存在不同程度的异常变化。

In this paper,the method of morphological method and tidal factor discriminant method is used to analyze the observation data of quartz pendulum inclinometer in Yinchuan Seismic Station,and the abnormal characteristics of the observation data of quartz pendulum inclinometer in Yinchuan Seismic Station and its predication indexes are proposed.The analysis results show that there are obvious anomalies in the observation data of the quartz pendulum in Yinchuan Seismic Station before the strong earthquake occurred within 400km in the surrounding area of Yinchuan,and there are abnormal changes of different degrees before the earthquake of kunlun mountain at the west of kunlun mountain in 2001 and the 8.0 earthquake in Sichuan in 2008.