气候变化领域集成服务门户(CCPortal): Detection of the Chandler Wobble of Mars From Orbiting Spacecraft

CCPortal

DOI	10.1029/2020GL090568
	Detection of the Chandler Wobble of Mars From Orbiting Spacecraft
	Konopliv A.S.; Park R.S.; Rivoldini A.; Baland R.-M.; Le Maistre S.; Van Hoolst T.; Yseboodt M.; Dehant V.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:21
英文摘要	For the first time for any planetary body other than the Earth, the free wobble of the pole called the Chandler wobble has been detected for Mars with a period of 206.9 ± 0.5 days and amplitude of 10 cm from radio tracking observations of Mars Odyssey, Mars Reconnaissance Orbiter (MRO), and Mars Global Surveyor (MGS), in order of decreasing sensitivity. The motion of the rotation pole location on the surface of Mars, or polar motion, is observed using two different approaches: (1) joint global estimates of Mars' orientation and its gravity field and (2) time series solutions of C21 and S21. For Mars interior models, the Chandler wobble period is combined with other measurements including the moments of inertia from our estimated precession rate (Formula presented.) and tidal Love number k2 = 0.169 ± 0.006. The Chandler wobble period constrains the rheology of the Martian mantle and in particular its long-term frequency dependence. © 2020. American Geophysical Union. All Rights Reserved. This article has been contributed to by US Government employees and their work is in the public domain in the USA.
英文关键词	Martian surface analysis; Poles; Chandler wobbles; Global estimate; Mars global surveyor; Mars Reconnaissance Orbiters; Martian mantle; Moments of inertia; Planetary bodies; Surface of Mars; Orbits; Chandler wobble; detection method; gravity field; mantle; Mars; Martian atmosphere; polar motion; precession; rheology; spacecraft; time series analysis; tracking
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169534
作者单位	Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Royal Observatory of Belgium, Brussels, Belgium
推荐引用方式 GB/T 7714	Konopliv A.S.,Park R.S.,Rivoldini A.,et al. Detection of the Chandler Wobble of Mars From Orbiting Spacecraft[J],2020,47(21).
APA	Konopliv A.S..,Park R.S..,Rivoldini A..,Baland R.-M..,Le Maistre S..,...&Dehant V..(2020).Detection of the Chandler Wobble of Mars From Orbiting Spacecraft.Geophysical Research Letters,47(21).
MLA	Konopliv A.S.,et al."Detection of the Chandler Wobble of Mars From Orbiting Spacecraft".Geophysical Research Letters 47.21(2020).