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本文通过计算基式地震仪(SKZ)对于不同形态和不同初始斜率的14种归一化地震信号的响应,说明地震仪的初动特性与地震信号有很大关系。作者建议用伯拉格(Berlage)函数近似远场地动位移,并由基式地震仪的时间特性和伯拉格函数褶积计算出仪器响应。对于频率不同的伯拉格函数得出了仪器的初动特性。最后指出,用与初动分析相同的方法去分析所谓二动、三动特性,没有普遍使用意义。
In this paper, the responses of 14 kinds of normalized seismic signals of different forms and different initial slopes are calculated by calculating the basic seismometer (SKZ), which shows that the initial behavior of the seismograph has a great relationship with the seismic signal. The authors propose using the Berlage function to approximate the far-field ground motion and calculate the instrument response from the time characteristics of the base-type seismometer and the Berger’s function. For the Bragg functions with different frequencies, the initial behavior of the instrument is obtained. Finally, it is not commonly used to analyze the so-called two-action and three-action characteristics in the same way as the initial analysis.