文章基本信息

标题：Earth’s temporal principal moments of inertia and variable rotation
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作者：Wenbin Shen ; Wei Chen ; Rong Sun 等
期刊名称：Geo-spatial Information Science
印刷版ISSN：1009-5020
电子版ISSN：1993-5153
出版年度：2008
卷号：11
期号：2
页码：127-132
DOI：10.1007/s11806-008-0064-1
出版社：Taylor and Francis Ltd
摘要：Based on the gravity field models EGM96 and EIGEN-GL04C, the Earth’s time-dependent principal moments of inertia A, B, C are obtained, and the variable rotation of the Earth is determined. Numerical results show that A, B, and C have increasing tendencies; the tilt of the rotation axis increases 2.1×10−8 mas/yr; the third component of the rotational angular velocity, ω3, has a decrease of 1.0×10−22 rad/s2, which is around 23% of the present observed value. Studies show in detail that both θ and ω3 experience complex fluctuations at various time scales due to the variations of A, B and C.
关键词：Earth rotation; principal moments of inertia; wavelet analysis