A case study of a radially polarized Pc4 event observed by the Equator-S satellite
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Abstract. A 16 mHz Pc4 pulsation was recorded on March 17, 1998, in the prenoon sector of the Earth's magnetosphere by the Equator-S satellite. The event is strongly localized in radial direction at approximately L = 5 and exhibits properties of a field line resonance such as an ellipticity change as seen by applying the method of the analytical signal to the magnetic field data. The azimuthal wave number was estimated as m \\approx 150. We discuss whether this event can be explained by the FLR mechanism and find out that the change in ellipticity is more a general feature of a localized Alfvén wave than indicative of a resonant process.Key words: Magnetospheric physics (MHD waves and instabilities)
1985 ◽
Vol 107
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pp. 559-559
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2004 ◽
Vol 11
(5/6)
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pp. 535-543
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1985 ◽
Vol 107
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pp. 559-559
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1995 ◽
Vol 09
(22)
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pp. 2857-2898
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1982 ◽
Vol 28
(3)
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pp. 459-468
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2009 ◽
Vol 5
(H15)
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pp. 354-354
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