测绘学报

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基于CGCS2000的中国地壳水平运动速度场模型研究

蒋志浩1,张鹏1,秘金钟   

  • 收稿日期:2009-04-01 修回日期:2009-08-24 出版日期:2011-12-28 发布日期:2019-01-01
  • 通讯作者: 蒋志浩

The Model of Crustal Horizontal Movement Based on CGCS2000 Frame

  • Received:2009-04-01 Revised:2009-08-24 Online:2011-12-28 Published:2019-01-01

摘要: 本文首先介绍了通过数据处理获取CGCS2000(中国大地坐标系统2000)下点位坐标和速度场的方法,其次研究分析了在CGCS2000下建立满足我国大陆区域无整体旋转条件的我国区域板块位移基准方法,本文作者计算得到的CGCS2000下我国大陆区域的欧拉角速度是0.2997(°)/Ma,旋转极的位置为(64.77°N,94.093°E),最后利用计算获取的CGCS2000下的国家高精度GPS网的坐标和速度值,采用有限元插值方法建立了我国大陆区域地壳运动速度场模型,并初步分析了CGCS2000下的我国大陆地壳运动整体趋势。通过本文的研究可以进一步维护和精化我国CGCS2000的稳定性、动态性和精确性,也可对CGCS2000坐标参考框架下的我国区域地壳运动特征的研究提供科学方法和高时空分辨率的基础数据。

Abstract: In this paper, The author firstly introduced the processing strategy of obtaining the coordinate and velocity base on the CGCS2000(Chinese geocentric 3D coordinate system), Secondly a new plates displacement reference frame of Chinese mainland subjected to the regional No-Net-Rotation (NNR) conditions is researched,The results inferred the position of the Euler rotation pole of the Chinese mainland plates is (64.77°N,94.093°E) and its rate is 0.2997(°)/Ma base on the CGCS2000. Finally, Crustal movement velocity field of Chinese mainland are inferred through the precise result of CORS and national GPS network, and the model of crustal deformation velocity field has been established base on the adoptions of Finite Element Interpolation method. On which, the regional crustal deformation characters of china mainland have been proximately analyzed. Base on the study of this paper, the precision, dynamic and reliability of CGCS2000 would be further renewed and maintained, further more the basic data with high spatial-temporal resolution and scientific methods are referred to study characteristics of Chinese mainland crustal movement.