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本文详细介绍了用计算机进行地震 P 波远场位移谱分析、测定震源参数的理论和方法。把观测台站记录到的地震 P 波作为输入资料,得出震源远场位移谱,提取与震源参数有关的谱参数,确定出地震的震源尺度、地震矩及其它震源参数。实现了用计算机自动连续地测定震源参数。同时也可以采取人机结合的方式进行,以便互相补充。通过对实际地震的处理,说明方法是可行的。
In this paper, the theory and method of using computer to analyze the P-wave far-field displacement spectrum of the earthquake and determining the source parameters are described in detail. Taking the seismic P wave recorded by observational stations as input data, the displacement spectra of the sources in the far field are obtained, the spectral parameters related to the source parameters are extracted, and the seismic source scale, seismic moment and other source parameters are determined. Realize the automatic and continuous determination of source parameters by computer. At the same time can also take the man-machine combination of ways to complement each other. By processing the actual earthquake, it is feasible to explain the method.