• 责任者：Wang Shuangxu (No.2 Crust Monitoring and Apptication Center ; China Earthquake Administration ; Xi’an 710054 ; China) ; Jiang Fengyun
• 刊名：Chinese Journal of Geophysics
• 出版年：2013
• 卷期：56(10)
• 关键词：地壳运动 ; crustal movement ; 青藏高原 ; Qinghai-Tibetan Plateau
• 页码：p.3334-3345
• 图表：6 illus., 43 refs.
• 分类号：0300
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

     In this paper, we derived the GPS velocity field at the eastern edge of Tibet from the campaign GPS measurement implemented by the CMONC （China Crustal Movement Observation Network） and TEONC （China Tectonic Environment Observation Networks） in 1999--2011. Then, we analyzed the time-depended features and the spatial distributions of the GPS velocity, integrating with the dynamic background and the large events in this area. At last, we investigated the characteristics and mechanism of 3D crust-movement, by comparing to the vertical movement from leveling measurements in 1970s--2011. The results indicated that：  The different magnitude and direction of GPS horizontal velocity are mainly ruled by the effects of extrusion and rotation from the Tibet plateau and the mutative state of motion in different stage may also relate to the pregnancy and erupting of large earthquake （especially the seismogenic fault and the adjacent areas of Wenchuan earthquake）. The features of the crust movement are related to the dynamic environment and the activity from subsurface. This implied that themovements are inherited. （~The Longmenshan fault zone which was under compression before the Wenchuan Ms8. 0 earthquake is in the stage of relaxation and adjustment now. While, the strain energy of the north edge of Bayankela block which is close to the I.ongmenshan fault and the eastern edge of Chuandian block is still accumulating.