| 地球的时变主惯性矩和变化的自转(英文) |
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| 作者单位： | School of Geodesy and Geomatics Wuhan University The Key Laboratory ofGeospace Environment and Geodesy，Wuhan University，129 Luoyu Road，Wuhan 430079，China，129 Luoyu Road，Wuhan 430039，China |
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| 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, ω 3, 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 ω 3 experience complex fluctua-tions at various time scales due to the variations of A, B and C.
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Earth's Temporal Principal Moments of Inertia and Variable Rotation |
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| Authors: | SHEN Wenbin CHEN Wei SUN RongSHEN Wenbin School of Geodesy and Geomatics Wuhan University Luoyu Road Wuhan China The Key Laboratory of Geospace Environment and Geodesy Wuhan University Luoyu Road Wuhan China |
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| Institution: | SHEN Wenbin CHEN Wei SUN RongSHEN Wenbin,School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430039,China, The Key Laboratory of Geospace Environment and Geodesy,Wuhan University,129 Luoyu Road,Wuhan 430079,China. |
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| Abstract: | |
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| Keywords: | Earth rotation principal moments of inertia wavelet analysis |
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