【摘要】 利用新疆独山子台跨断层形变观测资料,对独山子山前断层的活动速率、活动特征及区域应力场进行了分析,结合震源机制解的研究成果进行了对比验证,同时应用"速率累加"分析方法进行了异常提取。结果显示:①独山子—安集海断裂垂直位移年平均变化量为0.106mm,沿基线方向的水平位移年平均变化量为0.189mm,沿断层走向的水平走滑年平均变化量为-0.883mm,断层活动以右旋走滑为主兼具逆冲分量;②1993～2007年独山子断层的最大水平主压应力方向在339.85°～346.78°之间,平均为344.23°;③乌苏5.1级地震前,独山子台的形变记录曲线有较明显的速率异常变化与同震形变波动。更多还原

【Abstract】 Using the cross-fault deformation data from Dushanzi station,this paper makes a preliminary analysis on movement rate,movement character and regional tectonic stress field of Dushanzi-Anjihai fault,and compares with the results of focal mechanism solutions for verification.The result shows that:(1)The nowadays movement of Dushanzi-Anjihai fault is characterized by right-lateral thrust motion,the average annual change of vertical movement is 0.106mm,the average annual change of horizontal movement is 0.189mm,and the average annual change of right-lateral slipping movement is-0.883mm.(2)The direction of maximum principal stress is between 339.35° and 346.78°,the average is 344.23°.(3)Dushanzi deformation station recorded preliminary anomaly and co-seismic variation before the WuSu MS5.1 earthquake。更多还原