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| Titel |
Time evolution of high-altitude plasma bubbles imaged at geomagnetic conjugate points |
| VerfasserIn |
K. Shiokawa, Y. Otsuka, T. Ogawa, P. Wilkinson |
| 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. 9 ; Nr. 22, no. 9 (2004-09-23), S.3137-3143 |
| Datensatznummer |
250014995
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| Publikation (Nr.) |
 copernicus.org/angeo-22-3137-2004.pdf |
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| Zusammenfassung |
| Temporal and spatial evolution of two high-altitude plasma bubbles (evening
and midnight) was observed on 4 April 2002, at geomagnetic conjugate points
at Sata, Japan (magnetic latitude 24° N), and Darwin, Australia
(magnetic latitude 22° S), using two 630-nm airglow imagers. The apex
height of the bubbles reached ~1500km. The upward velocity of the
evolution was faster in the evening (~170m/s at 20:00-21:00 LT) than around
midnight (~28m/s at 23:00-00:00 LT). Bifurcating features of the bubbles into
a smaller scale size of ~50km were clearly seen for both the evening
and midnight bubbles, showing fairly good conjugacy between the Northern and
Southern Hemispheres. |
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