Large‐scale mass redistribution in the oceans, 1993–2001
Large‐scale mass redistribution in the oceans, 1993–2001
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DOI：
10.1029/2003gl018048
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发表时间：
2003-10
影响因子：
5.2
通讯作者：
J. L. Chen;C. Wilson;X. G. Hu;B. Tapley
中科院分区：
文献类型：
--
作者：
J. L. Chen;C. Wilson;X. G. Hu;B. Tapley
考克斯和赵[2002]最近对卫星激光测距测量的研究表明，自1998年以来，大规模的质量重新分布导致了地球动态扁率（J2）的快速变化。使用卫星高度计观测和两个运行的海洋环流模式（OGCM），我们研究质量变化的海洋和J2的估计效果。结合高度计和OGCM的结果表明，类似于1998年的J2变化的变化，并预测相当大的海洋对J2异常的影响比纯粹的OGCM估计，这表明，海洋不应该被排除在任何手段作为一个重要的来源，这个有趣的大地测量异常，直到他们被进一步研究。
A recent study of satellite laser ranging measurements by Cox and Chao [2002] indicates that large‐scale mass redistribution has caused a rapid change in Earth's dynamic oblateness (J2) since 1998. Using satellite altimeter observations and two runs of an ocean general circulation models (OGCM), we examine mass variations in the oceans and their estimated effect on J2. Combined altimeter and OGCM results indicate variations similar to the J2 changes in 1998, and predict considerably larger oceanic effects on the J2 anomaly than purely OGCM estimates, suggesting that the oceans should not be ruled out by any means as a significant source of this interesting geodetic anomaly, until they have been studied further.