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本文用序贯分析方法对华北地区六个台站的九套倾斜仪1970年—1977年的全部观测资料,统计了地面倾斜方向急剧变化与地震发生的关系。认为,在目前的观测条件下不宜把一些地震前曾观测的地面倾斜方向急剧变化这一现象视为地震前兆信息。
In this paper, all the observed data of nine sets of inclinometers at six stations in North China from 1970 to 1977 were analyzed by sequential analysis. The relationship between the sharp change of ground inclination and the occurrence of the earthquake was calculated. It is considered that under the current observation conditions, it is not appropriate to take the phenomenon of sharp changes of the ground inclination observed before some earthquakes as the information of earthquake precursors.