未震空区与卸载地震

近年来,地震预报的地震学方法清理结果表明,利用地震空区预报未来强震有一定的效果,但是虚报率较高。作者研究发现,在一些没有发生地震的孕震空区周围,发生了某种“卸载地震”,以至终止了空区的孕震过程。文中总结了某些卸载地震的特点和利用对卸载地震的识别从而减少虚报的效果。卸载地震的作用有可能对其它无震前兆异常提供解释。

SEISMIC GAP OF NO FOLLOWING EARTHQUAKES AND UNLOADING EARTHQUAKE

In recent years some research results about earthquake prediction by means of seismological methods show that we can achieve some successes of predicting strong earthquakes by use of preparation gaps. First, we can draw primary gaps on the epicenter distribution pictures on small earthquakes. Then we find out the preparation gaps based on some criteria and evaluate the magnitude, time and location of future earthquake from emperical formulars. But we will meet the problem of false prediction of earthquake. In this paper we study the false prediction of earthquake by applying preparation gap. It is found that unload earthquakes occurred in the neighborhood of a preparation process of earthquake. So that no following earthquake will occur within the preparation gap. we sum up some characteristics of unload earthquakes and evaluate the effects to reduce false palse prediction of earthquakes from them. It is possible that the unloading role may be used to explain the phenomena of other precursors of no following earthquake.