UNSPECIFIED (2000) Is the dynamic magnetosphere an avalanching system? GEOPHYSICAL RESEARCH LETTERS, 27 (7). pp. 911-914. ISSN 0094-8276

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Abstract

The analogy between the dynamic magnetosphere and an avalanche system is examined by using the global auroral energy deposition obtained by the Polar UVI as a measure of the energy output of the magnetosphere. The analysis reveals two types of energy dissipation: those internal to the magnetosphere occurring at all activity levels with no intrinsic scale, and those associated with active times corresponding to global energy dissipation with a characteristic scale. The internal events exhibit the same power law index in both active and quiet times. These features are consistent with a simple avalanche ('sandpile') numerical model.

Item Type:	Journal Article
Subjects:	Q Science > QE Geology
Journal or Publication Title:	GEOPHYSICAL RESEARCH LETTERS
Publisher:	AMER GEOPHYSICAL UNION
ISSN:	0094-8276
Date:	1 April 2000
Volume:	27
Number:	7
Number of Pages:	4
Page Range:	pp. 911-914
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/13499

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