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| HAL: hal-00316616, version 1 |
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| Annales Geophysicae 18, 4 (2000) 411-415 |
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| A case study of a radially polarized Pc4 event observed by the Equator-S satellite |
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| R. Cramm 1K. H. Glassmeier 1 |
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| (2000) |
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| 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. |
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| 1: | Institut für Geophysik und Meteorologie |
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Technische Universität |
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| 2: | Max-Planck-Institut für extraterrestrische Physik |
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Max-Planck-Institut für extraterrestrische Physik |
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| 3: | Institute of Space Sciences |
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Institute of Space Sciences |
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| Subject | : | Sciences of the Universe/Ocean, Atmosphere Sciences of the Universe/Earth Sciences |
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| Attached file list to this document: | |||||
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| hal-00316616, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00316616 | |
| oai:hal.archives-ouvertes.fr:hal-00316616 | |
| From: Publication EGU | |
| Submitted on: Saturday, 1 January 2000 08:00:00 | |
| Updated on: Wednesday, 3 September 2008 11:11:36 | |
