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| Titel |
Three-dimensional simulation of equatorial spread-F with meridional wind effects |
| VerfasserIn |
J. Krall, J. D. Huba, G. Joyce, S. T. Zalesak |
| 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. 5 ; Nr. 27, no. 5 (2009-05-04), S.1821-1830 |
| Datensatznummer |
250016502
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| Publikation (Nr.) |
 copernicus.org/angeo-27-1821-2009.pdf |
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| Zusammenfassung |
| The NRL SAMI3 three-dimensional simulation code is used to examine the
effect of meridional winds on the growth and suppression of
equatorial spread F (ESF).
The simulation geometry conforms to a dipole field geometry
with field-line apex heights from 200 to 1600 km at the equator,
but extends over only 4 degrees in longitude.
The full SAMI3 ionosphere equations are included,
providing ion dynamics both along and across the field. The
potential is solved in two dimensions in the equatorial plane
under a field-line equipotential approximation.
By selectively including terms in the potential equation,
the reduced growth predicted by Maruyama (1988)
and the stabilization predicted by Zalesak and Huba (1991)
are separately realized.
We find that ESF is stabilized by a sufficiently
large constant meridional wind (60 m/s in our example). |
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