摘要
提出了在地壳形变研究中区域无整体旋转基准的概念,并用区域无整体旋转基准对中国大陆及周边地区的GPS观测数据进行了处理,给出在该基准条件下区域地壳运动速度场。这一速度场解释了多种类型的地壳运动现象和地形地貌现象。研究表明:中国东部的地壳运动存在着一个大的左旋运动态势,其范围覆盖近一半的中国陆地面积,影响着中国整个东部和周边区域的地壳运动,中国东部现今的海岸线形态可能很大程度上归因于这种地壳运动,而且中国海岸线的“S”形曲线将会随着地壳运动变得更加弯曲。
A new concept of regional No-Net-Rotation （NNR） reference frame for researching crustal movement is proposed. The GPS data observed in Chinese mainland and the surrounding areas is processed by use of this reference frame and a new crustal movement velocity field is obtained. The new velocity field describes very well the different kinds of crustal movements, and topographic and geomorphic phenomena in Chinese mainland. The research indicates there is a large left-lateral movement trend in the eastern China, which covers nearly a half of the area of Chinese mainland and affects the crustal movement in the entire eastern China and its adjacent areas. It is considered that the present-day coastline of China seas is just resulted from such a left-lateral movement, and Stype coastline will be more curved in the future.
出处
《大地测量与地球动力学》
CSCD
北大核心
2007年第2期52-60,共9页
Journal of Geodesy and Geodynamics
基金
地震科学联合基金(105033)
