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Physics Of Plasmas


We provide a tutorial on the paradigms and tools of magnetohydrodynamic(MHD)turbulence. The principal paradigm is that of a turbulent cascade from large scales to small, resulting in power law behavior for the frequency power spectrum for magnetic fluctuationsEB(f). We will describe five useful statistical tools for MHDturbulence in the time domain: the temporal autocorrelation function, the frequency power spectrum, the probability distribution function of temporal increments, the temporal structure function, and the permutation entropy. Each of these tools will be illustrated with an example taken from MHDfluctuations in the solar wind. A single dataset from the Wind satellite will be used to illustrate all five temporal statistical tools.


This work is freely available courtesy of the American Institute of Physics and the American Physical Society, Division of Plasma Physics.

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