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| Titel |
The influence of solar wind turbulence on geomagnetic activity |
| VerfasserIn |
D. Jankovičová, Z. Vörös, J. Šimkanin |
| 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 ; 15, no. 1 ; Nr. 15, no. 1 (2008-02-05), S.53-59 |
| Datensatznummer |
250012553
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| Publikation (Nr.) |
 copernicus.org/npg-15-53-2008.pdf |
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| Zusammenfassung |
| The importance of space weather and its forecasting is growing as
interest in studying geoeffective processes in the Sun – solar wind –
magnetosphere – ionosphere coupled system is increasing.
In this paper higher order statistical moments of interplanetary
magnetic field and geomagnetic SYM-H index fluctuations are
compared. The proper description of fluctuations in the solar wind
can elucidate important aspects of the geoeffectivity of upstream
turbulence and contribute to our understanding of space weather.
Our results indicate that quasi-stationary intervals during both
quiet and stormy periods have to be investigated
in order to find correlations between upstream
and geomagnetic conditions. We found that
the fourth statistical moment (kurtosis), which was not considered
in previous studies, appears to be a new geoeffective parameter.
Intermittency of the magnetic turbulence in the solar wind can influence
the efficiency of the solar wind – magnetosphere coupling through
affecting magnetic reconnection at the Earth's magnetopause. |
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