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Possibility of Excitation of Magnetospheric Modes by Strong Geomagnetic Storms
Geophysics Department, Observatório Nacional, Rua General José Cristino 77, São Cristóvão, Rio de Janeiro, Brazil
Physics Institute, Universidade do Estado do Rio de Janeiro, Maracanã, Rio de Janeiro, Brazil
- 1 Geophysics Department, Observatório Nacional, Rua General José Cristino 77, São Cristóvão, Rio de Janeiro, Brazil
- 2 Physics Institute, Universidade do Estado do Rio de Janeiro, Maracanã, Rio de Janeiro, Brazil
International Journal of Geosciences·Volume 08 (2017)·Pages 743–755·Published 10 May 2017·DOI10.4236/ijg.2017.85041
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Abstract
In this paper, we advance the possibility of strong geomagnetic storms (called sometimes super geomagnetic storms) exciting oscillation modes of the magnetosphere with some defined periods. To determine this possibility, we analyze the whole period of duration of some particularly strong geomagnetic storms through the Fourier transformation. We obtain some results on the strongest geomagnetic storm of the time series, the one from March 1989.
KeywordsGeomagnetic StormsDstSym-HMagnetospheric Modes
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