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Scaling in long term data sets of geomagnetic indices and solar wind epsilon as seen by WIND spacecraft
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UNSPECIFIED (2003) Scaling in long term data sets of geomagnetic indices and solar wind epsilon as seen by WIND spacecraft. GEOPHYSICAL RESEARCH LETTERS, 30 (22). -. doi:10.1029/2003GL018209
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Official URL: http://dx.doi.org/10.1029/2003GL018209
Abstract
[ 1] We study scaling in fluctuations of the geomagnetic indices ( AE, AU, and AL) that provide a measure of magnetospheric activity and of the epsilon parameter which is a measure of the solar wind driver. Generalized structure function ( GSF) analysis shows that fluctuations exhibit self- similar scaling up to about 1 hour for the AU index and about 2 hours for AL, AE and epsilon when the most extreme fluctuations over 10 standard deviations are excluded. The scaling exponents of the GSF are found to be similar for the three AE indices, and to differ significantly from that of epsilon. This is corroborated by direct comparison of their rescaled probability density functions.
| 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: | 28 November 2003 | ||||
| Dates: |
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| Volume: | 30 | ||||
| Number: | 22 | ||||
| Number of Pages: | 4 | ||||
| Page Range: | - | ||||
| DOI: | 10.1029/2003GL018209 | ||||
| Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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