基于GPS速度场的中国大陆地壳运动特征研究

Study on the Characteristics of Crustal Movement in China Based on GPS Velocity Field

根据2007~2009年、2009~2011年、2011~2013年GPS速度场及前3期加权平均后的2007~2013年速度场,分析了中国大陆主要运动地块的活动特征。从整体来看,现今中国大陆地壳运动的驱动力仍来自于印度板块向北的挤压,地壳活动值得关注的区域是断裂、地块间GPS速度场存在大幅差异的区域,主要体现在青藏高原北部,天山地区,鄂尔多斯东、西缘以及川滇菱形地块。

Based on the GPS data of 2007~2009, 2009~2011, 2011~2013 and the weighted average of these data, this paper analyzed the activity characteristics of the main plots in the mainland of China. On the whole, the driving force of the continental crustal movement in China is still from the India plate. The crustal movement is the area which is worth to pay attention to, there is a large difference between the GPS velocity field. It is mainly reflected in the northern part of the Qinghai-Tibet Plateau, the Tianshan Mountains, the east and the west margin of Ordos Basin, as well as the Sichuan-Yunnan diamond block.