Magnetohydrodynamic turbulence: Observation and experiment

Journal Article · Fri May 15 04:00:00 EDT 2015 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4919391· OSTI ID:22410368

Brown, M. R.; Schaffner, D. A.; Weck, P. J. ^[1]

---

1. Department of Physics and Astronomy, Swarthmore College, 500 College Avenue, Swarthmore, Pennsylvania 19081 (United States)

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 fluctuations E{sub B}(f). We will describe five useful statistical tools for MHD turbulence 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 MHD fluctuations in the solar wind. A single dataset from the Wind satellite will be used to illustrate all five temporal statistical tools.

• OSTI ID: 22410368
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 5 Vol. 22; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DATASETS
DISTRIBUTION FUNCTIONS
ENTROPY
EXPERIMENTAL DATA
FLUCTUATIONS
MAGNETOHYDRODYNAMICS
PROBABILITY
SOLAR WIND
SPECTRA
STATISTICS
STRUCTURE FUNCTIONS
TURBULENCE