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On the gravitational signature of zonal flows in Jupiter-like planets: An analytical solution and its numerical validation
Kong, Dali1,2; Zhang, Keke2,3; Schubert, Gerald4
2017-02-01
Source PublicationPHYSICS OF THE EARTH AND PLANETARY INTERIORS
ISSN0031-9201
Volume263Pages:1-6
Corresponding AuthorZhang, Keke(kzhang@ex.ac.uk)
AbstractIt is expected that the Juno spacecraft will provide an accurate spectrum of the Jovian zonal gravitational coefficients that would be affected by both the deep zonal flow, if it exists, and the basic rotational distortion. We derive the first analytical solution, under the spheroidal-shape approximation, for the density anomaly induced by an internal zonal flow in rapidly rotating Jupiter-like planets. We compare the density anomaly of the analytical solution to that obtained from a fully numerical solution based on a threedimensional finite element method; the two show excellent agreement. We apply the analytical solution to a rapidly rotating Jupiter-like planet and show that there exists a close relationship between the spatial structure of the zonal flow and the spectrum of zonal gravitational coefficients. We check the accuracy of the spheroidal-shape approximation by computing both the spheroidal and non-spheroidal solutions with exactly the same physical parameters. We also discuss implications of the new analytical solution for interpreting the future high-precision gravitational measurements of the Juno spacecraft. (c) 2016 Elsevier B.V.All rights reserved.
KeywordGaseous planets Zonal flow Rotation
DOI10.1016/j.pepi.2016.11,009
WOS KeywordCONVECTION ; POLYTROPES ; MODEL
Indexed BySCI
Language英语
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000395360400001
PublisherELSEVIER SCIENCE BV
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23220
Collection中国科学院紫金山天文台
Corresponding AuthorZhang, Keke
Affiliation1.Chinese Acad Sci, Key Lab Planetary Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
2.Univ Exeter, Ctr Geophys & Astrophys Fluid Dynam, Exeter EX4 4QE, Devon, England
3.Macau Univ Sci & Technol, Lunar & Planetary Sci Lab, Macau, Peoples R China
4.Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA 90095 USA
Recommended Citation
GB/T 7714
Kong, Dali,Zhang, Keke,Schubert, Gerald. On the gravitational signature of zonal flows in Jupiter-like planets: An analytical solution and its numerical validation[J]. PHYSICS OF THE EARTH AND PLANETARY INTERIORS,2017,263:1-6.
APA Kong, Dali,Zhang, Keke,&Schubert, Gerald.(2017).On the gravitational signature of zonal flows in Jupiter-like planets: An analytical solution and its numerical validation.PHYSICS OF THE EARTH AND PLANETARY INTERIORS,263,1-6.
MLA Kong, Dali,et al."On the gravitational signature of zonal flows in Jupiter-like planets: An analytical solution and its numerical validation".PHYSICS OF THE EARTH AND PLANETARY INTERIORS 263(2017):1-6.
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