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| Titel |
Zonal velocity of the equatorial plasma bubbles over Kolhapur, India |
| VerfasserIn |
D. P. Nade, A. K. Sharma, S. S. Nikte, P. T. Patil, R. N. Ghodpage, M. V. Rokade, S. Gurubaran, A. Taori, Y. Sahai |
| 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 ; 31, no. 11 ; Nr. 31, no. 11 (2013-11-22), S.2077-2084 |
| Datensatznummer |
250086152
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| Publikation (Nr.) |
 copernicus.org/angeo-31-2077-2013.pdf |
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| Zusammenfassung |
| This paper presents the observations of zonal drift velocities of equatorial
ionospheric plasma bubbles and their comparison with model values. These
velocities are determined by nightglow OI 630.0 nm images. The nightglow
observations have been carried out from the low latitude station Kolhapur
(16.8° N, 74.2° E; 10.6° N dip lat.) during clear
moonless nights. Herein we have presented the drift velocities of equatorial
plasma bubbles for the period of February–April 2011. Out of 80 nights, 39
showed the occurrence of equatorial plasma bubbles (49%). These 39
nights correspond to magnetically quiet days (ΣKp < 26). The average eastward
zonal velocities (112 ± 10 m s−1) of equatorial plasma bubbles increased from evening sector to
21:00 IST (Indian Standard Time = Universal Time + 05:30:00 h), reach maximum about 165 ± 30 m s−1 and then decreases
with time. The calculated velocities are in good agreement with that of
recently reported values obtained with models with occasional differences;
possible mechanisms of which are discussed. |
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