地震形变与声学前兆机理研究

An Experimental Analysis of Earthquake Deformation and Acoustic Presage

对0～10kHz频率范围内的弹性振动产生机理进行研究，采用地声观测方法试验并分析了在地震发生前的最后阶段，远离地震发生地的近表层局部形变过程的特点，以及千赫兹的频率范围内地声噪音产生的机理。研究表明，在地震发生之前几个昼夜期间，远离地震发生地，由于摩擦所引发的高强度地声辐射，可以作为重要信息对地震进行综合预报。

This paper employed earthquake sound observation approach to analyze the characteristics of local deformation of near-surface layer far from earthquake center and the earthquake noise principle less than l kHz at the final stage before earthquake, which was based on the elastic vibration mechanism investigation of 0 - 10 kHz frequency range. Results demonstrate that highintensity earthquake sound radiation resulting from friction can be served as the important information to comprehensively predict some earthquakes, which is far from earthquake center in several days and nights before earthquake.