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Intermittent character of interplanetary magnetic field fluctuations
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Bruno, Roberto, Carbone, Vincenzo, Chapman, Sandra C., Hnat, B., Noullez, Alain and Sorriso-Valvo, Luca (2007) Intermittent character of interplanetary magnetic field fluctuations. Physics of Plasmas, Vol.14 (No.3). Article: 032901. doi:10.1063/1.2711429 ISSN 1070-664X.
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Official URL: http://dx.doi.org/10.1063/1.2711429
Abstract
Interplanetary magnetic field magnitude fluctuations are notoriously more intermittent than velocity fluctuations in both fast and slow wind. This behavior has been interpreted in terms of the anomalous scaling observed in passive scalars in fully developed hydrodynamic turbulence. In this paper, the strong intermittent nature of the interplanetary magnetic field is briefly discussed comparing results performed during different phases of the solar cycle. The scaling properties of the interplanetary magnetic field magnitude show solar cycle variation that can be distinguished in the scaling exponents revealed by structure functions. The scaling exponents observed around the solar maximum coincide, within the errors, to those measured for passive scalars in hydrodynamic turbulence. However, it is also found that the values are not universal in the sense that the solar cycle variation may be reflected in dependence on the structure of the velocity field. (c) 2007 American Institute of Physics.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Journal or Publication Title: | Physics of Plasmas | ||||
| Publisher: | American Institute of Physics | ||||
| ISSN: | 1070-664X | ||||
| Official Date: | March 2007 | ||||
| Dates: |
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| Volume: | Vol.14 | ||||
| Number: | No.3 | ||||
| Number of Pages: | 6 | ||||
| Page Range: | Article: 032901 | ||||
| DOI: | 10.1063/1.2711429 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access |
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