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本文总结了作者几年来在唐山地区进行的地声观测研究工作。其中包括不同观测点的频谱特征;地声的方向性及其序列特征。分析表明,地声的优势频率和震中距有密切的联系,特别在震中区有高频地声存在,此外地声在空间和时间分布上的特征也是显著的。
This article summarizes the author’s research work on ground acoustic observation conducted in Tangshan over the past few years. Including the spectral features of different observation points; the directionality of the ground sound and its sequence features. The analysis shows that the dominant frequency of ground acoustics is closely related to the epicenter distance, especially in the epicenter area. In addition, the characteristics of spatial sound and time distribution are also significant.