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本文选定日均值的一阶差分值作为基本统计量,对我区七个定点形变连续观测台站的倾斜资料进行频数统计分析,并按Pd(≤r)=95％(d为日差绝对值)求得七个台站倾斜仪的正常复现域r值。在此基础上得到了各台辨别异常限值,作为初步区分正常与异常的依据。由举出的多个震例表明,我区地倾斜观测资料有分辨10~(-6)—10~(-7)异常的能力。
In this paper, the first-order difference of the daily mean value is selected as the basic statistics, and the inclination data of seven fixed-point continuous deformation observing stations in our district are analyzed by frequency statistics. According to the data of Pd (≤r) = 95% Value) to obtain the normal recurrence domain r value of the seven station inclinometers. On this basis, each station has been identified abnormal limits, as a preliminary distinction between normal and abnormal basis. According to a number of earthquakes cited, it shows that there is a capability of resolving the anomalous 10 ~ (-6) -10 ~ (-7) in the tilt observation data in our area.