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本文收集了若干甘肃及邻区中强震前地震波速度比异常的资料,並初步总结了该区1970年至1983年发生的中强震前地震波速度异常的时空特性。也讨论了该区和其它地区地震波速度比异常特性的区别。十几年的工作表明,V_S/V_P观测资料应用到该区的地震预报中是有可能的。最后,简单地讨论了速度异常研究中的一些问题。
In this paper, the data of seismic velocity anomalies before moderate to moderate earthquakes in a number of Gansu and its adjacent areas are collected and the spatial and temporal characteristics of seismic velocity anomalies before moderate to moderate earthquakes occurred in this area from 1970 to 1983 are preliminary summarized. The difference between seismic wave velocity and anomalous characteristics in this area and elsewhere is also discussed. More than a decade of work has shown that it is possible to apply V_S / V_P observations to the seismic prediction in this area. Finally, we briefly discuss some of the problems in velocity anomalies.