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| Titel |
Determining the verse of magnetic turbulent cascades in the Earth's magnetospheric cusp via transfer entropy analysis: preliminary results |
| VerfasserIn |
M. Materassi, A. Wernik, E. Yordanova |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 14, no. 2 ; Nr. 14, no. 2 (2007-04-16), S.153-161 |
| Datensatznummer |
250012160
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| Publikation (Nr.) |
 copernicus.org/npg-14-153-2007.pdf |
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| Zusammenfassung |
The inter-scale coupling in the dynamics of the magnetic field in the
Earth's magnetospheric cusp is studied with the technique of transfer
entropy. This is a non-linear data analysis technique conceived to determine
which is the process that plays the role of the "dynamical
driver" between two processes interacting.
The time series of the magnetic field components measured along the
trajectory of a spacecraft through the cusp are decomposed via continuous
wavelets, so a time series of the square modulus of the wavelet coefficients
may be associated to each scale ℓ considered. The coupling between to
two nearby scales is studied, with the purpose of singling out turbulent
cascade directions from large to small scales and viceversa.
Preliminary physical conclusions are proposed. |
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