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强地震的孕育过程也是孕震介质的形成过程。在强震前震源附近小地震的地震波运动学、动力学特征的变化过程，则反映了孕震介质的变化过程。为研究地震的孕育、发展和发生的过程，采用单台地震波振幅比、尾波持续时间比、尾波衰减系数这３ 项地震波参数作为地震学短期前兆指标，分析其震兆特征，从而达到监测孕震介质变化的目的。研究结果表明：单台地震波参数能够有效地发现地震的前兆，但地震波参数的前兆图像复杂多变，不具有统一的变化模式，由简单到复杂，整体的“由白变花”为其最本质的震兆特征。在研究中使用计算机对地震波参数进行了长期连续的时空扫描，分析了异常特征，客观地评估了它的预报效能。
Strong earthquake inoculation process is also the formation of seismogenic medium. The changes of the kinematics and dynamics characteristics of seismic waves of small earthquakes near the source before the strong earthquakes reflect the changing process of the seismogenic medium. In order to study the process of gestation, development and occurrence, three seismic wave parameters such as single seismic amplitude ratio, coda duration ratio and coda attenuation coefficient are used as short-term precursory indices of seismology to analyze the characteristics of seismic trillion and reach the monitoring The purpose of seismogenic media change. The results show that the single seismic wave parameters can effectively find the precursor of the earthquake. However, the precursory images of the seismic wave parameters are complicated and changeable, and do not have a uniform change pattern. From simple to complex, the whole “Bai Bai Hua” is its most essential Seismic trillion features. In the study, the long-term continuous space-time scanning of seismic wave parameters was carried out by computer, the abnormal characteristics were analyzed, and its prediction efficiency was objectively evaluated.