Differential rotation in Jupiter: A comparison of methods

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

Whether Jupiter rotates as a solid body or has some element of differential rotation along concentric cylinders is unknown. But Jupiter's zonal wind is not north/south symmetric so at most some average of the north/south zonal winds could be an expression of cylinders. Here we explore the signature in the gravitational moments of such a smooth differential rotation. We carry out this investigation with two general methods for solving for the interior structure of a differentially rotating planet: the CMS method of Hubbard (Hubbard, W.B. [2013]. Astrophys. J. 768, 1-8) and the CLC method of Wisdom (Wisdom, J. [1996]. Non-Perturbative Hydrostatic Equilibrium. http://web.mit.edu/wisdom/www/interior.pdf). The two methods are in remarkable agreement. We find that for smooth differential rotation the moments do not level off as they do for strong differential rotation.

Original languageEnglish (US)
Pages (from-to)315-322
Number of pages8
JournalIcarus
Volume267
DOIs
StatePublished - Mar 15 2016

Keywords

  • Geophysics
  • Jupiter
  • Jupiter, interior

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

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