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fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Chapman, Sandra C.; Hnat, B. (2007)
Publisher: American Geophysical Union
Languages: English
Types: Article
Subjects: QB

Classified by OpenAIRE into

arxiv: Physics::Space Physics, Nonlinear Sciences::Chaotic Dynamics, Physics::Fluid Dynamics
Solar wind turbulence is dominated by Alfvénic fluctuations with power spectral exponents that somewhat surprisingly evolve toward the Kolmogorov value of −5/3, that of hydrodynamic turbulence. We analyze in situ satellite observations at 1AU and show that the turbulence decomposes linearly into two coexistent components perpendicular and parallel to the local average magnetic field and determine their distinct intermittency independent scaling exponents. The first of these is consistent with recent predictions for anisotropic MHD turbulence and the second is closer to Kolmogorov-like scaling.

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