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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/3932

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Title: Pc3 pulsations during variable IMF conditions
Authors: Villante, U.*
Lepidi, S.*
Francia, P.*
Vellante, M.*
Meloni, A.*
Lepping, R. P.*
Mariani, F.*
Keywords: Magnetospheric physics
MHD waves and instabilities
Solar wind-magnetosphere interactions
Issue Date: 1999
Publisher: EGS - Springer-Verlag
Title of journal: Annales Geophysicae
Series/Report no.: 4 / 17 (1999)
Abstract: Pc3 geomagnetic field fluctuations detected at low latitude (L'Aquila, Italy) during the passage of a high velocity solar wind stream, characterized by variable interplanetary magnetic field conditions, are analyzed. Higher frequency resonant fluctuations and lower frequency phenomena are simultaneously observed; the intermittent appearance and the variable frequency of the longer period modes can be well interpreted in terms of the variable IMF elements; moreover their polarization characteristics are consistent with an origin related to external waves propagating in antisunward direction. A comparison with simultaneous observations performed at Terra Nova Bay (Antarctica) provides additional evidence for a clear relationship between the IMF and Pc3 pulsations also at very high latitudes.
URI: http://hdl.handle.net/2122/3932
Appears in Collections:Papers Published / Papers in press
01.03.02. Magnetic storms
01.03.99. General or miscellaneous
01.03.04. Structure and dynamics

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