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| Titel |
Cluster observations of a complex high-altitude cusp passage during highly variable IMF |
| VerfasserIn |
M. G. G. T. Taylor, M. W. Dunlop, B. Lavraud, A. Vontrat-Reberac, C. J. Owen, P. Décréau, P. Travnicek, R. C. Elphic, R. H. W. Friedel, J. P. Dewhurst, Y. Wang, A. Fazakerley, A. Balogh, H. Rème, P. W. Daly |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 22, no. 10 ; Nr. 22, no. 10 (2004-11-03), S.3707-3719 |
| Datensatznummer |
250015042
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| Publikation (Nr.) |
 copernicus.org/angeo-22-3707-2004.pdf |
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| Zusammenfassung |
| On 26 February 2001, the Cluster spacecraft were
outbound over the Northern Hemisphere, at approximately 12:00 MLT, approaching
the magnetosheath through the high-altitude (and exterior) cusp region. Due
to macroscopic motions of the cusp, the spacecraft made multiple entries
into the exterior cusp region before exiting into the magnetosheath,
presenting an excellent opportunity to utilize the four spacecraft
techniques available to the Cluster mission. We present and compare 2
methods of 4-spacecraft boundary analysis, one using PEACE data and one
using FGM data. The comparison shows reasonable agreement between the
techniques, as well as the expected "single spacecraft" plasma and magnetic
signatures when associated with propagated IMF conditions. However, during
periods of highly radial IMF (predominantly negative BX GSM), the 4-spacecraft
boundary analysis reveals a dynamic and deformed cusp morphology. |
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