地震序列性质与断层分维研究

本文引入地震断层的自扩展破裂模式,用以解释地震序列的特征并计算地震断层的分维数。由自扩展破裂模式,本文导出地震断层的分维数为D=ln(1+Abln q/1+q)/ln q/1+q,其中q为余震区长度与主震的破裂尺度之比,A=2.1。在q≥1时,D=Ab,这与Aki的公式b=D/2是一致的。

CHARACTERISTICS OF EARTHQUAKE SEQUENCES AND THE FRACTAL STUDY OF FAULTS

In this paper, the self-propagating rupture model of seismogenic faults is introduced to interpret the earthquake sequence characteristics and to calculate the fractal dimension of the faults. Based on the model, the fractal dimension of seismogenic faults has been deduced asin Which Q is the ratio of aftershock area length and mainshock rupture length, and A is approximate to 2.1 When q >1 D-Ab, which is consistent with the formula b = D/2 by K. Aki.