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| Titel |
Effect of magnetic activity on plasma bubbles over equatorial and low-latitude regions in East Asia |
| VerfasserIn |
G. Li, B. Ning, L. Liu, W. Wan, J. Y. Liu |
| 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. 1 ; Nr. 27, no. 1 (2009-01-19), S.303-312 |
| Datensatznummer |
250016371
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| Publikation (Nr.) |
 copernicus.org/angeo-27-303-2009.pdf |
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| Zusammenfassung |
| The dependence of plasma bubble occurrence in the
eveningside ionosphere, with magnetic activity during the period years
2001–2004, is studied here based on the TEC observations gathered by
ground-based GPS receivers which are located in the equatorial and low-latitude
regions in East Asia. The observed plasma bubbles consist of the plasma-bubble
events in the equatorial (stations GUAM, PIMO and KAYT), and low-latitude regions
(stations WUHN, DAEJ and SHAO). It is shown that most
equatorial plasma-bubble events commence at 20:00 LT, and may last for >60 min.
The magnetic activity appears to suppress the generation of equatorial
plasma bubbles with a time delay of more than 3 h (4–9 h). While in
the low-latitude regions, most plasma-bubble events commence at about 23:00 LT
and last for <45 min. The best correlation between Kp and low-latitude
plasma-bubble occurrence is found with an 8–9 h delay, a weak correlation
exists for time delays of 6–7 h. This probably indicates that over 3 h
delayed disturbance dynamo electric fields obviously inhibit the
development of plasma bubbles in the pre-midnight sector. |
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