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最大位移是认识地震破裂机理和断层未来地震危险性的最重要参数之一。对 2 0 0 1年 11月 14日发生的昆仑山口西 8 1级地震地表破裂带最大位移的调查有多种结果。通过野外调查发现 ,本次地震地表最大同震水平位移 6 4± 1 4m ,位于库赛湖东北 (93 2 2 6 6°E ,35 7779°N) ,最大垂直位移 5 2± 0 2m ,与水平位移分布基本一致。影响本次地震地表破裂带地表位移测量的因素很多 ,其中断裂带多期活动、地震地表破裂带构造形式复杂 ,以及特殊的冰川冻土区地貌位移标志是主要因素。
The maximum displacement is one of the most important parameters to recognize the earthquake rupture mechanism and the future seismic hazard of the fault. The survey of the maximum displacement of the surface rupture zone on the M 8 1 earthquake in the west of the Kunlun Mountain Pass on November 14, 2001, has many results. According to the field survey, the maximum horizontal coseismic displacements of the epicenter are 6 4 ± 1 4m, located at 93 2 26 6 ° E (35 7779 ° N) northeast of Kusai Lake with a maximum vertical displacement of 5 2 ± 0 2m. The horizontal displacement distribution is basically the same. There are many factors that affect the surface displacement measurement of surface rupture zone in this earthquake. Among them, multi-stage activity of the fault zone, complex structure of the earth’s surface rupture zone, and special geomorphic displacement of glacier permafrost are the main factors.