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| Titel |
The ultra-fast Kelvin waves in the equatorial ionosphere: observations and modeling |
| VerfasserIn |
A. N. Onohara, I. S. Batista, H. Takahashi |
| 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. 2 ; Nr. 31, no. 2 (2013-02-07), S.209-215 |
| Datensatznummer |
250017751
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| Publikation (Nr.) |
 copernicus.org/angeo-31-209-2013.pdf |
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| Zusammenfassung |
| The main purpose of this study is to investigate the vertical coupling
between the mesosphere and lower thermosphere (MLT) region and the
ionosphere through ultra-fast Kelvin (UFK) waves in the equatorial
atmosphere. The effect of UFK waves on the ionospheric parameters was
estimated using an ionospheric model which calculates electrostatic
potential in the E-region and solves coupled electrodynamics of the
equatorial ionosphere in the E- and F-regions. The UFK wave was observed in
the South American equatorial region during February–March 2005. The MLT
wind data obtained by meteor radar at São João do Cariri
(7.5° S, 37.5° W) and ionospheric F-layer bottom height
(h'F) observed by ionosonde at Fortaleza (3.9° S; 38.4° W)
were used in order to calculate the wave characteristics and amplitude of
oscillation. The simulation results showed that the combined
electrodynamical effect of tides and UFK waves in the MLT region could
explain the oscillations observed in the ionospheric parameters. |
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