大地测量与地球动力学2017，Vol.37Issue(7)：686-691,6.DOI:10.14075/j.jgg.2017.07.004
川滇地区垂直形变和主要断层活动性研究
Research on Vertical Deformation and Fault Activity of Sichuan-Yunnan Area
摘要
Abstract
Based on precise leveling observation data,the vertical motion velocity field of western Sichuan-Yunnan province is obtained using vertical velocity at GNSS point as an a priori value to constrain adjustment and vertical velocity of GNSS continuous station less than 10 km away from level line to inspect.Residual statistical analysis at GNSS test point and benchmark suggest that vertical velocity precision at the benchmark is superior to 0.89 mm/a and error distribution is relatively uniform.The vertical motion velocity field of the Sichuan-Yunnan region indicates that western Sichuan province is in the stage of rapid differential uplift,wherein the uplifting rate in Gongga mountain region located to the southeast of Xianshui river is the fastest (5～6 mm/a),that vertical motion in Sichuan basin is not obvious,wherein the rate is between 0～ 1 mm/a,and that sinking occurred in southwest Yunnan at the rate of 0～2 mm/a,which is consistent with the observations by GNSS.In addition,the tension characteristics of major faults inwestern Sichuan-Yunan province are analyzed through level velocity profile.关键词
垂直形变/水准/川滇地区/约束平差/断层运动Key words
vertical deformation/level/Sichuan-Yunnan region/constrain adjustment/fault movement分类
天文与地球科学引用本文复制引用
苏广利,田晓,孙启凯,邓董建,畅柳,王世进..川滇地区垂直形变和主要断层活动性研究[J].大地测量与地球动力学,2017,37(7):686-691,6.基金项目
国家自然科学基金(41472180) （41472180）
中国地震局第一监测中心科技创新主任基金(FMC2016005).National Natural Science Foundation of China,No.41472180 （FMC2016005）
Director Fund for Innovation in Science and Technology of First Crust Monitoring and Application Center,CEA,No.FMC2016005. （）
