地震活动前兆的三种广义分形维

地震研究及其预报是多学科的交叉，而非线性科学即分形学和混浊理论给人以新启示。本文叙述了地震的广义能量分维，广义时间分维和广义空间分维，探讨了三种广义分维在地震的前兆和余震中的变化规律，进而指出三种广义分维由主震前的低层异常变为震后再度回升现象，作者对第５个地震活跃期的特点提出了一些看法。

THREE KINDS OF CENERALIZED FRACTAL DIMENSIONS OF THE PRECURSORS OF EARTHQUAKE ACTIVITY

The study of earthquake and its forecast is a multi -discipline overlapping. Some new enlightenment is given by non-linear scinence such as frentals and chows. In this paper,the generalized energy fractal dimension,the generalized time fractal dimension,and the generalized space fractal dimension for discribing earthquake are presented. The varying pattern of these three generalized fractal dimension in aftershocks of an earthquake is also discussed. In this way it is pointed out that there is a phenomenon in which three generalized fractal dimesions change from decreasing anomaly before earthquake to increasing repeatedly after earthquake. As the characteristics of the 5th earthquake active period,some opinions are put forward.