Long-time behavior of MHD shell models
Chaotic Dynamics
2009-10-31 v1
Abstract
The long time behavior of velocity-magnetic field alignment is numerically investigated in the framework of MHD shell model. In the stationary forced case, the correlation parameter C displays a nontrivial behavior with long periods of high variability which alternates with periods of almost constant C. The temporal statistics of correlation is shown to be non Poissonian, and the pdf of constant sign periods displays clear power law tails. The possible relevance of the model for geomagnetic dynamo problem is discussed.
Keywords
Cite
@article{arxiv.nlin/0009053,
title = {Long-time behavior of MHD shell models},
author = {P. Frick and G. Boffetta and P. Giuliani and S. Lozhkin and D. Sokoloff},
journal= {arXiv preprint arXiv:nlin/0009053},
year = {2009}
}
Comments
6 pages with 5 figures. In press on Europhysics Letters