| Issue |
EPL
Volume 90, Number 5, June 2010
|
|
|---|---|---|
| Article Number | 59001 | |
| Number of page(s) | 6 | |
| Section | Geophysics, Astronomy and Astrophysics | |
| DOI | https://doi.org/10.1209/0295-5075/90/59001 | |
| Published online | 08 June 2010 | |
On the scaling properties of anisotropy of interplanetary magnetic turbulent fluctuations
1
Liquid Crystal Laboratory - IPCF/CNR - Ponte P. Bucci, Cubo 31C, I-87036 Rende, Italy, EU
2
Swedish Institute of Space Physics - Box 537, SE-751 21 Uppsala, Sweden, EU
3
Space Research Institute - 6 Moskovska str., 1000 Sofia, Bulgaria, EU
4
Dipartimento di Fisica, Università della Calabria, and CNISM - Ponte P. Bucci, Cubo 31C, I-87036 Rende, Italy, EU
Corresponding author: sorriso@fis.unical.it
The anisotropic character of interplanetary magnetic-field turbulence has been studied through the analysis of Cluster data. The full tensor of the mixed second-order structure functions has been used to quatitatively measure the degree of anisotropy and its effect on small-scale turbulence. Three different regions of the near-Earth space have been studied, namely the solar wind, the Earth's foreshock and magnetosheath. While in the undisturbed solar wind the observed strong anisotropy is mainly due to the large-scale magnetic field, near the magnetosphere other sources of anisotropy influence the magnetic-field properties.
PACS: 96.50.Ci – Solar wind plasma; sources of solar wind / 95.30.Qd – Magnetohydrodynamics and plasmas / 52.35.Ra – Plasma turbulence
© EPLA, 2010
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