口镇—关山断裂的现今活动特征

本文从口镇—关山断裂第四纪以来的活动特征出发,结合断裂带沿线现今地裂缝和小震群的活动,对该断裂带的现今活动性质、地震危险性判定等问题进行了探讨;并且指出,口镇—关山断裂带现今以蠕滑运动为主,全新世以来,断裂活动明显有西强东弱的变化特征。

NOWADAYS ACTIVE FEATURES OF THE KOUZHEN-GUANSHAN FAULTS Mi Fengshou Han Hengyue Jin Jingqiuan Lio Haiyun

Taking the active features of the Kouzhen-Guanshan fault zone after the Quatenary period as the starting point and based on the activation of nowadays land-cracks and the small eanhquake groups, this paper discussed the questions about the nowadays active natures of the fault zone and the earthquake danger. This paper shows clearly that the activation of the Kouzhen-Guanshan fualt zone is mainly squirming and sliding mo-tion, and than the fault activation has been imbued clearly with the changeable features being strong to the east and weak to the west since the Holocene.