Research on the Characteristics of Recent Crustal Movement of the South Tianshan Area in Xinjiang through the Strain Field and the Change Rate of Baseline

详细信息   

• 责任者：Li Jie (Institute of Geophysics & Geomatics ; China University of Geosciences ; Wuhan 430074 ; China) ; Liu Daiqin
• 刊名：Journal of Seismological Research
• 出版年：2012
• 卷期：35(1)
• 关键词：地壳运动 ; crustal movement ; 应变分析 ; strain analysis ; 天山 ; Tianshan Mountains
• 页码：p.59-65
• 图表：4 illus., 1 table, 18 refs.
• 分类号：0400
• 出版序号：20130057
• issnNo：ISSN1000-0666
• isbnNo：CN53-1062/P

摘要

 In a unified framework, the authors calculate the selected GPS data in South Tianshan area of Xinjiang from 2005 to 2009, and illustrate the principal strain, the shear strain, and the change rate of baseline in different periods to study the crustal movement in this area. The authors find that the crustal deformation in this area is decreasing both from west to east and from south to north, and the principal compressive strain features a compressive stress field in a nearly South-North direction, which results from the northward pushing of the Indian Plate. Then, according to the change rate of the baseline, the authors find that the south part is fiercely compressed by the Tarim Block and the Qinghai-Tibetan Plateau,and the crustal movement in the south of Kashi is relatively active.