摘要
青藏铁路邻侧的地震地表破裂调查显示昆仑山 2 0 0 1年 8.1级地震地表破裂明显呈水平左旋走滑性质 ,地震破裂带主要由NE向的张裂和NW向地震鼓包呈之字型沿昆仑山口断裂线性分布构成。青藏公路邻侧的地震破裂的实际左旋位移量为 4 .3～ 4 .8m。地震的强烈破坏主要集中在地震破裂带上 ,在青藏公路附近见其影响范围可延至破裂带南北两侧 10～ 5 0km范围内。
Field investigation shows that the surface rupture zone of the 2001 Ms 8.1 central Kunlun earthquake has a left-lateral strike-slip feature. It is distributed along the active Kunlun fault. The surface rupture zone is composed of distinct shear faults, extensional cracks and mole tracks spread along the fault lineament. The maximum horizontal sinistral displacement of 4.3～4.8 m was measured along the rupture zone, which is some 10 km long in the area adjacent to the Qingzang railway. The major damage is concentrated on the surface rupture zone, and there are a lot of minor damages distributed in a zone whose width ranges from 10 km to 50 km in the area.
出处
《地球学报》
EI
CAS
CSCD
北大核心
2004年第4期411-414,共4页
Acta Geoscientica Sinica
基金
国家重点基础研究发展规划项目子课题 (编号 :95 13 0 1 0 6)
横向项目"青藏铁路望昆 拉萨段沿线活动断裂研究"资助
关键词
地震地表破裂
左旋走滑
地震鼓包
地震张裂
Kunlun Mountains co-seismic surface rupture left-lateral strike-slip mole track extensional crack
