On wave turbulence in MHD

被引:13
|
作者
Galtier, S [1 ]
Nazarenko, SV [1 ]
Newell, AC [1 ]
机构
[1] Univ Warwick, Inst Math, Coventry CV4 7AL, W Midlands, England
关键词
D O I
10.5194/npg-8-141-2001
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
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 B-0. 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.
引用
收藏
页码:141 / 150
页数:10
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