玉树7.1级地震断层地表破裂带应急科考

The emergency science research of surface rupture zone for the Yushu M7.1 earthquake

玉树7.1级地震断层同震地表破裂带由3条主破裂左阶组成,总体走向300°～320°,隆宝镇上见有约2km长的雁列式张裂缝,北侧主破裂长约16km,中间主破裂长约9km,南侧主破裂长约7km,总长约34km。各主破裂均由一系列支破裂雁列组成,支破裂表现为一系列挤压鼓包与张裂缝相间排列或雁列式张裂缝,最南端禅古寺表现为垂直位错。破裂为左旋走滑性质,最大走滑位移量位于北侧主破裂上,约1.8m。

The surface rupture zone for the Yushu M7.1 earthquake includes three left-lateral strike main faults,trending 300° ～ 320° in general.Longbao town has a structure with a length of 2km.Surface rupture in the north zone is about 16km.Surface rupture in the middle zone is about 9km.Surface rupture in the south zone is about 7km.There is 34km in general.Every main fault consists a series of branch faults which appear as press or tension small bulge and echelon fracture.The Changusi temple in the low-south has a...