摘要
姑咱台的形变观测(水管倾斜仪、伸缩仪和水平摆倾斜仪)已有近17年的历史,从历年原始记录曲线图 中发现,在多次中强以上地震前几小时至一月左右有“突跳”、“转折”、“散点”等特异形态。
The deformation observation including title, strain instruments in Gizan Seismic Station have operated for 17 years. From the records we find that there were many peculiar abnormal changes before middle and strong earthquakes from several hours to one month. Typical styles include "suddenly jump", "turning" and "scattered spots" .