Anti-diffusive momentum transport and time-variability in the solar interior

Eun Jin Kim, Nicolas Leprovost

Research output: Chapter in Book/Report/Conference proceedingConference proceedingpeer-review


For parameter values typical of the solar interior, turbulent eddy viscosity is shown to be negative, with turbulence enhancing the radial shear. Both magnetic diffusivity and thermal diffusivity are severely quenched by flow shear and Alfvén-gravity waves, with values much smaller than the magnitude of the eddy viscosity. The results imply that the solar tachocline is likely to develop too strong a radial shear to be a stationary Hartmann layer, exhibiting complex time variability.

Original languageEnglish
Title of host publicationUnsolved Problems in Stellar Physics - A Conference in Honour of Douglas Gough
EditorsR.J Stancliffe, J Dewi, G Houdek, R.G Martin, C.A Tout
PublisherAIP Publishing
Number of pages5
ISBN (Print)9780735404625
Publication statusPublished - 9 Nov 2007
Externally publishedYes
EventConference on Unsolved Problems in Stellar Physics - Cambridge, United Kingdom
Duration: 2 Jul 20076 Jul 2007

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


ConferenceConference on Unsolved Problems in Stellar Physics
Country/TerritoryUnited Kingdom


  • MHD
  • Sun: interior
  • Sun: magnetic fields
  • Sun: rotation
  • Turbulence
  • Waves

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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