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| Titel |
Simultaneous observation of ionospheric plasma bubbles and mesospheric gravity waves during the SpreadFEx Campaign |
| VerfasserIn |
H. Takahashi, M. J. Taylor, P.-D. Pautet, A. F. Medeiros, D. Gobbi, C. M. Wrasse, J. Fechine, M. A. Abdu, I. S. Batista, E. Paula, J. H. A. Sobral, D. Arruda, S. L. Vadas, F. S. Sabbas, D. C. Fritts |
| 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. 4 ; Nr. 27, no. 4 (2009-04-02), S.1477-1487 |
| Datensatznummer |
250016474
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| Publikation (Nr.) |
 copernicus.org/angeo-27-1477-2009.pdf |
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| Zusammenfassung |
| During the Spread F Experiment campaign, under NASA Living with a
Star (LWS) program, carried out in the South American Magnetic
Equator region from 22 September to 8 November 2005, two airglow CCD
imagers, located at Cariri (7.4° S, 36.5° W, geomag.
11° S) and near Brasilia (14.8° S, 47.6° W,
geomag. 10° S) were operated simultaneously and measured the
equatorial ionospheric bubbles and their time evolution by
monitoring the airglow OI 6300 intensity depletions. Simultaneous
observation of the mesospheric OH wave structures made it possible
to investigate the relationship between the bubble formation in the
ionosphere and the gravity wave activity at around 90 km. On the
evening of 30 September 2005, comb-like OI 6300 depletions with a
distance of ~130 km between the adjacent ones were observed.
During the same period, a mesospheric gravity wave with a horizontal
wavelength of ~130 km was observed. From the 17 nights of
observation during the campaign period, there was a good correlation
between the OI 6300 depletion distances and the gravity wave
horizontal wavelengths in the mesosphere with a statistically
significant level, suggesting a direct contribution of the
mesospheric gravity wave to plasma bubble seeding in the equatorial
ionosphere. |
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