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Scaling of solar wind epsilon and the AU, AL and AE indices as seen by WIND
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UNSPECIFIED (2002) Scaling of solar wind epsilon and the AU, AL and AE indices as seen by WIND. GEOPHYSICAL RESEARCH LETTERS, 29 (22). -. doi:10.1029/2002GL016054
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Official URL: http://dx.doi.org/10.1029/2002GL016054
Abstract
We apply the finite size scaling technique to quantify the statistical properties of fluctuations in AU, AL and AE indices and in the epsilon parameter that represents energy input from the solar wind into the magnetosphere. We find that the exponents needed to rescale the probability density functions (PDF) of the fluctuations are the same to within experimental error for all four quantities. This self-similarity persists for time scales up to similar to4 hours for AU, AL and epsilon and up to similar to2 hours for AE. Fluctuations on shorter time scales than these are found to have similar long-tailed (leptokurtic) PDF, consistent with an underlying turbulent process. These quantitative and model-independent results place important constraints on models for the coupled solar wind-magnetosphere system.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QE Geology | ||||
| Journal or Publication Title: | GEOPHYSICAL RESEARCH LETTERS | ||||
| Publisher: | AMER GEOPHYSICAL UNION | ||||
| ISSN: | 0094-8276 | ||||
| Official Date: | 15 November 2002 | ||||
| Dates: |
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| Volume: | 29 | ||||
| Number: | 22 | ||||
| Number of Pages: | 4 | ||||
| Page Range: | - | ||||
| DOI: | 10.1029/2002GL016054 | ||||
| Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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