【摘要】 通过对上海观测的形变资料,运用EIS 2000软件,分析佘山地震台倾斜记录资料的中期趋势。在排除干扰的前提下,结合差分、一阶差分等各种分析方法来分析这一区域的形变资料。发现强震发生前,余山地震台的倾斜仪器从中期趋势上出现了明显的趋势转折、加速、变化现象。在差分异常频次累加等分析方法中,也找到了类似的大震前的能量异常现象,值得关注。更多还原

【Abstract】 In this article,the medium-term tendency of observation data of clinometer in Sheshan Seismic Station is analyzed with EIS 2000 software.After eliminating the disturbance,sever- al analysis methods,such as union difference and one-order difference are employed to ana- lyze the deformation data of this region.It is found that before the occurrence of strong earthquake the medium tendency of clinometer observes in Sheshan Seismic Station shows obvious tendency transition,acceleration and change phenomena.The similar anomalous en- ergy phenomena before strong earthquake are also recognized in the results from difference unusual frequency accumulation method.It is worth to paying attention.更多还原