论文部分内容阅读
为研究地震活动图象的异常特征,本文选用了物理学中的速率概念,给出了地震空区、大震前中、小地震条带、地震活动迁移和地震危险地块的一个新的定量异常指标方法:大震前区域中、小地震的迁移速率变化.以华北和川滇地区发生的7次强震前的区域地震活动特征为例,通过计算,发现大震前区域地震迁移速率出现低值异常,认为区域地震迁移速率的变化反映了大震震源区地震活动的离散性和相对集中性的过程.并讨论了大震前区域地震迁移速率的物理意义.
In order to study the anomalous characteristics of seismic images, this paper selects the concept of velocity in physics, and gives a new quantitative method for the medium and small earthquake strikes, seismic activity migration and seismic hazard plots before the earthquake area, Abnormal Index Method: The Change of Migration Rate of Small Earthquakes in Pre-Large Earthquakes. Taking the regional seismic activity before 7 strong earthquakes in North China and Sichuan-Yunnan as an example, we find that the rate of earthquakes in the area before large earthquakes has occurred Low-value anomaly, we think that the change of regional earthquake migration rate reflects the process of the discreteness and relative concentration of seismic activity in the focal region of large earthquakes, and discusses the physical meaning of regional earthquake migration rate before large earthquakes.