动态应力与地震图像变化的相关性初探

PRELIMINARY APPROACH ON THE CORRELATABILITY OF DYNAMIC STRESS AND SEISMIC PATTERN VARIATION

列举11个大地震震例研究了发震断层面剪切运动方向与地震活动特征的相关性,提出由震后地震活动条带判断发震断层面走向的方法,结果表明,动态法判定的发震断层面与其它方法判定的发震断层面非常一致。探讨了动态应力场范围、传播和对基本应力场的加强作用,以及动态应力场展布范围与大面积宏观前兆等问题。

The eleven examples of large earthquakes were Cited to analyze the correlatability of shearing motion direction on scismogenic fault plane and seismicity patterns. A method of judging the strike of seismogenic fault plane from postseis-mic active stripe motion was suggested. It is shown that the seismogenic fault plane judged by the dynamic method is very consistent with the fault plane determined by other methods. Thus,the extent and propagation of dynamic stress field, the reinforced function to basic stress field, and the areal extent of dynamic stress field related to large areas of macroscopic precursor are discussed also.