But the differences of deformation in the South America plate based on these two models are very significant for contemporary crustal deformation measurement in mm/a accuracy,which shows present_day motion characteristic of the South America plate.

• 并基于空间大地测量资料 ,确立独立于任何板块运动模型约束和假设的南美板块欧拉参数 ,分析了现今南美板块的运动和活动形变