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Gravitational signature of rotationally distorted Jupiter caused by deep zonal winds
Kong, Dali1; Liao, Xinhao1; Zhang, Keke2; Schubert, Gerald3
2013-11-01
Source PublicationICARUS
ISSN0019-1035
Volume226Issue:2Pages:1425-1430
Corresponding AuthorSchubert, Gerald(schubert@ucla.edu)
AbstractBoth deep zonal winds, if they exist, and the basic rotational distortion of Jupiter contribute to its zonal gravity coefficients J(n) for n >= 2. In order to capture the gravitational signature of Jupiter that is caused solely by its deep zonal winds, one must take into account the full effect of rotational distortion by computing the coefficients J(n) in non-spherical geometry. This represents a difficult and challenging problem because the widely-used spherical-harmonic-expansion method becomes no longer suitable. Based on the model of a polytropic Jupiter with index unity, we compute Jupiter's gravity coefficients J(2), J(4), J(6), ... , J(12) taking into account the full effect of rotational distortion of the gaseous planet using a finite element method. For the model of deep zonal winds on cylinders parallel to the rotation axis, we also compute the variation of the gravity coefficients Delta J(2), Delta J(4), Delta J(6), ... , Delta J(12) caused solely by the effect of the winds in non-spherical geometry. It is found that the effect of the zonal winds on lower-order coefficients is weak, vertical bar Delta J(n)/J(n)vertical bar < 1%, for n = 2, 4, 6, but it is substantial for the high-degree coefficients with n >= 8. (C) 2013 Elsevier Inc. All rights reserved.
KeywordJupiter Jupiter, interior Jupiter, atmosphere
DOI10.1016/j.icarus.2013.08.016
WOS KeywordGIANT PLANETS ; CONVECTION ; ATMOSPHERE ; SATURN ; MODEL
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000326003900016
PublisherACADEMIC PRESS INC ELSEVIER SCIENCE
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/27773
Collection中国科学院紫金山天文台
Corresponding AuthorSchubert, Gerald
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Planetary Sci, Shanghai 200030, Peoples R China
2.Univ Exeter, Coll Engn Math & Phys Sci, Dept Math Sci, Exeter EX4 4QF, Devon, England
3.Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA 90095 USA
Recommended Citation
GB/T 7714
Kong, Dali,Liao, Xinhao,Zhang, Keke,et al. Gravitational signature of rotationally distorted Jupiter caused by deep zonal winds[J]. ICARUS,2013,226(2):1425-1430.
APA Kong, Dali,Liao, Xinhao,Zhang, Keke,&Schubert, Gerald.(2013).Gravitational signature of rotationally distorted Jupiter caused by deep zonal winds.ICARUS,226(2),1425-1430.
MLA Kong, Dali,et al."Gravitational signature of rotationally distorted Jupiter caused by deep zonal winds".ICARUS 226.2(2013):1425-1430.
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