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| Titel |
Magnetosheath excursion and the relevant transport process at the magnetopause |
| VerfasserIn |
C. L. Cai, I. Dandouras, H. Rème, J. B. Cao, G. C. Zhou, C. Shen, G. K. Parks, D. Fontaine |
| 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 ; 27, no. 8 ; Nr. 27, no. 8 (2009-08-03), S.2997-3005 |
| Datensatznummer |
250016606
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| Publikation (Nr.) |
 copernicus.org/angeo-27-2997-2009.pdf |
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| Zusammenfassung |
| A large-amplitude excursion of the magnetosheath (MS) in
quiet solar wind conditions on 17 March 2004 was recorded simultaneously by
the Cluster and TC-1 spacecraft. During this period, the IMF Bz was entirely
northward. The coherence between the bow shock motion and magnetopause (MP)
motion is revealed and the excursion velocities of the bow shock motion are
analyzed. In addition, the relevant plasma transport phenomenon in the form
of flux fluctuations below the ion gyrofrequency at the MP is exposed and is
interpreted as manifestation of the drift instability. Correlated
observations on charge accumulation and electrostatic potential perturbation
are recorded by electron measurements in high energy regime, and also the
eventual cross-field vortex motion in the nonlinear stage and the
consequential mass exchange are exhibited. The present investigation gives
some new insight into the MS plasma transport mechanism across the subsolar
MP region in quiet solar wind conditions during a period of northward IMF. |
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