【摘要】 利用全球定位系统 1991～ 2 0 0 1年及震后 4期GPS观测数据 ,获得了 2 0 0 1年 11月 14日昆仑山口西地震 (Ms8.1)的同震和震后形变运动图像。跨破裂带GPS网最近两点测得的最大同震形变为 1.9m左右 ,而震后 4个月断层蠕滑引起的变形约为 80mm。破裂带两侧震后变形幅度具有非对称性 ,南侧震后变形基本是北侧的 2～ 3倍。研究结果显示破裂带南盘在震后向偏东方向有明显移动 ,预示本次地震后能量的重新分配与积累 ,根据近几十年以来东昆仑断裂带的大地震由西向东扩展的特点 ,未来地震有向东迁移的可能。更多还原

【Abstract】 The coseismic and post earthquake deformation velocities with \%M\%s 8.1 Kunlunshan earthquake occurred on Nov. 14, 2001 were calculated from the GPS data of 1991-2001 and 4 repeated GPS surveys after the event. The maximum coseismic and post earthquake changes are 1.9 m and 0.08 m respectively. From the result of post earthquake velocity, we inverse the crustal deformation characteristics of eastern Kunlun active fault with elastic dislocation model. It shows that the domain motion of eastern Kunlunshan fault is left lateral and strike slip. The eastward motion of the southern block of Kunlunshan fault implies the redistribution and reaccumulation of energy after the earthquake. According to the feature that strong earthquakes along Kunlunshan fault extended from west to east in recent decades coming earthquakes will possibilly move to eastern region.更多还原