景泰地震前后兰州台的中期形变异常  

MEDIUM-TERM DEFORMATION ANOMALIES AT LANZHOU STATION BEFORE AND AFTER JINGTAI EARTHQUAKE

作　　者：唐九安 常千军 彭伟荣 周志宇 

机构地区：[1]兰州观象台

出　　处：《地壳形变与地震》1995年第3期54-59,共6页Crustal Deformation and Earthquake

摘　　要：给出了兰州台浮子水管倾斜仪和石英伸缩仪１９８７～１９９３年间Ｍ２波潮汐因子的年度调和分析结果，然后对各分量月均值进行了残差分析，并绘出去除长期项后的倾斜矢量图，据此探讨了景泰地震的中期前兆异常和震后效应特征。In this paper,the yearly harmonic analysis results of M2 wave of the data observed with water tube tiltmeter and quartz horizontal extensometer at Lanzhou deformation station during 1987～1993 is given.Then the residuals of the month mean value of all components are analysed and the tilt vector charts removing long-term item are given too.Accordingly,the characters of the medium-term deformation precursor and afterearthquake effect for Jingtai earthquake are studied.

关 键 词：地变形 倾斜潮 地震前兆 潮汐因子 

分 类 号：P315.7[天文地球—地震学]