利用GPS数据反演地心运动
Geocenter Motion from GPS Data
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摘要: 利用IGS提供的重新处理的周解,采用一阶形变法反演了2000～2009年的地心运动。结果表明,X、Y、Z方向的周年项振幅分别为3.72mm,3.06mm和8.95mm;Z方向的相位表明,2月份左右北半球的表面负载最大,8月份左右南半球的表面负载最大,南北半球存在明显的季节性质量交换。Abstract: By Degree-1 deformation approach,this paper inverses geocenter motion using reprocessed IGS weekly solution from 2000 to 2009.Results shows that annual amplitudes are 3.72 mm,3.06 mm and 8.95 mm in X,Y and Z direction respectively.And the maximum mass load within northern hemisphere is during February,and that of southern hemisphere is during August.
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