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| Titel |
Identification of active fossil bubbles based on coordinated VHF radar and airglow measurements |
| VerfasserIn |
R. Sekar, D. Chakrabarty, S. Sarkhel, A. K. Patra, C. V. Devasia, M. C. Kelley |
| 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 ; 25, no. 10 ; Nr. 25, no. 10 (2007-11-06), S.2099-2102 |
| Datensatznummer |
250015923
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| Publikation (Nr.) |
 copernicus.org/angeo-25-2099-2007.pdf |
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| Zusammenfassung |
| Plasma irregularity structures associated with an Equatorial Spread-F (ESF) event were
recorded by the Indian VHF Radar on 26–27 April 2006 near
midnight hours. The plasma structures were found to be isolated
without having bottomside structure. They moved predominantly
downward and the structures were found to be less turbulent than
their post-sunset counterparts. However, the structures were
characterized by meter-scale size irregularities. These structures
are identified for the first time as plasma depletion structures
using simultaneous, collocated measurements of OI 630.0 nm airglow
intensity variations. The variation of the base height of
ionospheric F layer over dip equator is also presented to buttress
the result. Further, these plasma structures are shown to be
"active fossil bubbles". |
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