应用天文研究组知识库

基于由卫星激光测距(Satellite Laser Ranging,SLR)资料建立的国际地球参考架SLRF2005,利用SLR测站的坐标和速度场解算了全球5大板块的运动参数,并与地质模型NNR-NUVEL-1A作比较和分析,结果表明基于现代空间测量技术的欧拉极与地质模型基本一致,说明近几百万年板块的运动是稳定的,同时数据显示两者之间仍存在一定差异。

We solve parameters of motions of the five continental plates (i. e., Pacific Plate, Australian Plate,African Plate,Eurasian Plate,and the North American plate) with Satellite Laser Ranging (SLR) station coordinates and measured velocity fields based on the SLRF2005. The SLRF2005 was established using global SLR data. We compare our results to the geological model NNR-NUVEL-1A and find that the Euler vectors according to measurements with modern space technologies agree precisely with those given by the geological model. This indicates that plate motions have been stable in millions of years. However, there are small yet noticeable differences between the Euler vectors evaluated from the two sources.