On wave turbulence in MHD

S. Galtier, S. V. Nazarenko, A. C. Newell

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

We describe the fundamental differences between weak (wave) turbulence in incompressible and weakly compressible MHD at the level of three-wave interactions. The main difference is in the structure of the resonant manifolds and the mechanisms of redistribution of spectral densities along the applied magnetic field Bo. Similar to pure acoustic waves, a three-wave resonance between collinear wavevectors is observed but, in addition, we also have a resonance through tilted planes and spheres. The properties of resonances and their consequences for the asymptotics are also discussed.

Original languageEnglish (US)
Pages (from-to)141-150
Number of pages10
JournalNonlinear Processes in Geophysics
Volume8
Issue number3
StatePublished - Aug 9 2001
Externally publishedYes

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Geophysics
  • Geochemistry and Petrology

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    Galtier, S., Nazarenko, S. V., & Newell, A. C. (2001). On wave turbulence in MHD. Nonlinear Processes in Geophysics, 8(3), 141-150.