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Renormalization-group study of a sandpile (FSOC)analog for magnetospheric activity

Tam, Sunny W. Y.; Chang, Tom; Chapman, S.C.; Watkins, N.W.. 2000 Renormalization-group study of a sandpile (FSOC)analog for magnetospheric activity. In: Wilson, Andrew, (ed.) Proceedings of the Fifth International Conference on Substorms, St. Petersburg, Russia, May 2000. ESA, 205-208. (ESA Special Publication, 443).

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Abstract/Summary

It has been suggested that the dynamics of the magnetotail may exhibit forced and/or self-organized critical behaviour. Recent analysis of experimental data seem to be in concert with this idea. These suggestions and indications have re-motivated interest in sandpile (avalanche) models. Some examples of specific interest for geomagnetic activity have the property that internal avalanches exhibit inverse power law statistics whereas systemwide avalanches have a well-defined mean. Here we apply the concept of a renormalization group to such a model. We demonstrate that invariant analysis based on the renormalization-group theory can explain the power law distribution of energy release by internal avalanches in then large-scale regime of these systems.

Item Type: Publication - Book Section
Programmes: BAS Programmes > Pre 2000 programme
ISBN: 9789290927723
Additional Keywords: sandpile, magnetospheric, magnetotail, sandpile models, avalanche models, sand pile
Date made live: 17 Jul 2013 12:54 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/502518

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