基于CGCS2000的中国地壳水平运动速度场模型研究  

The Model of Crustal Horizontal Movement Based on CGCS2000 Frame

作　　者：蒋志浩[1,2] 张鹏[3,1] 秘金钟[4,3] 李志才[1] 

机构地区：[1]国家基础地理信息中心,北京100044 [2]清华大学土木工程系,北京100084 [3]武汉大学测绘学院,湖北武汉430079 [4]中国测绘科学研究院,北京100039

出　　处：《测绘学报》2009年第6期471-476,共6页Acta Geodaetica et Cartographica Sinica

基　　金：国家863计划(2007AA12Z316,2007AA12Z313);国家863计划(2006AA12Z323)子项目“基于现代空间技术的高精度时空基准”

摘　　要：首先介绍通过数据处理获取CGCS2000(中国大地坐标系统2000)下点位坐标和速度场的方法,其次研究分析在CGCS2000下建立满足中国大陆区域无整体旋转条件的中国大陆板块位移基准方法,计算得到的CGCS2000下中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中国大陆区域地壳运动速度场模型,并初步分析CGCS2000下的中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中国CGCS2000的稳定性、动态性和精确性,也可对CGCS2000坐标参考框架下的中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。Firstly,the processing strategy of obtaining the coordinate and velocity based on the CGCS 2000 （Chinese geocentric 3D coordinate system）is introduced. 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. 299 7 （°）/Mo bused 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 based on the adoptions of finite element interpolation method. On which, the regionol crustal deformation characters of China moinland have been proximately analyzed. Based on the study of this paper, the precision, dynamics and reliability of CGCS 2000 would be further renewed and maintained, further more the basic data with high Spa tial-temporal resolution and scientific methods are referred to study characteristics of Chinese mainland crustal movement.

关 键 词：CGCS 2000 中国地壳水平运动 速度场模型 

分 类 号：P22[天文地球—大地测量学与测量工程]