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| Titel |
Ducted propagation of chorus waves: Cluster observations |
| VerfasserIn |
K. H. Yearby, M. A. Balikhin, Yu. V. Khotyaintsev, S. N. Walker, V. V. Krasnoselskikh, H. St. C. K. Alleyne, O. Agapitov |
| 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 ; 29, no. 9 ; Nr. 29, no. 9 (2011-09-26), S.1629-1634 |
| Datensatznummer |
250017092
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| Publikation (Nr.) |
 copernicus.org/angeo-29-1629-2011.pdf |
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| Zusammenfassung |
| Ducted propagation of whistler waves in the terrestrial
magnetosphere-ionosphere system was discussed and studied long before the
first in-situ spacecraft measurements. While a number of implicit examples of
the existence of ducted propagation have been found, direct observation of ducts
has been hampered by the low sampling rates of measurements of the plasma
density. The present paper is based on Cluster observations of chorus waves.
The ability to use measurements of the spacecraft potential as a proxy for
high time resolution electron density measurements is exploited to identify a
number of cases when increased chorus wave power, observed within the
radiation belts, is observed simultaneously with density enchantments. It is
argued that the observation of ducted propagation of chorus implies
modification of numerical models for plasma-wave interactions within the
radiation belts. |
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