本文计算了几种介质—仪器系统的单位脉冲响应,并用解析证明:其初动半周期与小尺度震源合成理论地震图的相应结果是等价的。为了避免低品质因数或远距离地震观测时的零点测量误差,采用四分之一周期测定了新丰江水库地区的 Q 值。结果表明,在该区不同部位和不同方向,介质的分布特征具有明显差异。 In this paper, the unit impulse responses of several medium-instrumentation systems are calculated, and the analytical results show that the initial half-cycles of the initial seismic half-cycles are equivalent to those of the synthetic seismograms of small-scale sources. In order to avoid the zero-point measurement error of low-quality factor or long-distance seismic observation, the Q value of Xinfengjiang reservoir area was determined by quarter cycle. The results show that there are significant differences in the distribution of the media in different parts of the area and in different directions.