【摘要】 通过分析2010年1月24日河津MS4.8地震前临汾台倾斜仪、应变仪资料,发现自1月上中旬开始,石英摆、体应变、垂直摆出现明显的加速、转折、高频突跳等异常反映;经小波函数分段计算得知,3仪器均在震前7天左右记录到明显的高频异常信息;震前1月宽带垂直摆(实验仪器)SN向连续出现错位(掉格)现象;各测项在异常时间出现的进程上呈明显准同步性特征。更多还原

【Abstract】 Through the analysis on the tilt and strain observation data of Linfen Central Seismological Station before Hejin Ms4.8 earthquake on January 4th,2010,some anomalies,including obvious acceleration,turn and sudden high-frequency jump of quartz pendulum,body strain and vertical pendulum,are found since early middle of January.The segmented calculation by using wavelet function indicate that 7 days before the earthquake,all records of the three instruments have obvious high-frequency information.In addition,the broadband vertical pendulum(one experiment instrument) in SN direction continuously appeared dislocation(drift) one month before the earthquake.The times of anomaly appearance of each observation item showed quasi-synchronous characteristics.更多还原