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通过对库尔勒铁门关体应变3年的观测资料进行可靠性分析认为本台站资料达到了I类台精度,干扰主要为气压效应和水位干扰,观测资料记录到的固体潮清晰。利用低通滤波和一阶差分的方法,可以识别出固体潮畸变。对识别出的48次固体潮畸变现象进行了统计,统计结果表明,6次畸变为干扰1,3次近震前存在固体潮畸变现象,其余畸变发生在强远震前。经过讨论分析认为观测中记录到的固体潮畸变现象是震前异常信号,但无法区分为近震前的信号还是强远震前的信号。
Based on the reliability analysis of the observed data of the Korla iron gate body for three years, it is concluded that the data of this station have reached the accuracy of the type I platform. The interference is mainly the barometric pressure effect and the water level interference. The observed solid tides are clear. Using low-pass filtering and first-order difference methods, solid tide distortion can be identified. The statistics of the 48 observed tide movements are statistically analyzed. The statistical results show that the tidal distortions occur 6 times before the strong earthquakes. After discussion and analysis, it is considered that the observed phenomenon of solid tide distortion in the observation is an anomalous signal before the earthquake, but it can not be distinguished from the signal before the near-earthquakes or the signal before the strong earthquakes.