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| Titel |
Quiet time F2-layer disturbances: seasonal variations of the occurrence in the daytime sector |
| VerfasserIn |
A. V. Mikhailov, A. H. Depueva, V. H. Depuev |
| 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. 1 ; Nr. 27, no. 1 (2009-01-21), S.329-337 |
| Datensatznummer |
250016374
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| Publikation (Nr.) |
 copernicus.org/angeo-27-329-2009.pdf |
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| Zusammenfassung |
| Earlier revealed seasonal/latitudinal variations of the
occurrence for positive and negative F2-layer Q-disturbances have been
interpreted in the framework of the present-day concept of the
thermosphere-ionosphere interaction. The basic process is the solar-driven
and storm-induced thermospheric circulation's interaction which varies with
season and latitude. Such morphological features as clustering of negative
Q-disturbances around winter solstice and the appearance of an additional
occurrence of summer peak at lower latitudes, the equinoctial occurrence peaks
for positive Q-disturbances and their merging to one summer peak at lower
latitudes can be explained in the framework of this concept. Moreover,
seasonal/latitudinal variations of the occurrence for usual storm-induced
F2-layer disturbances, which exhibit quite different morphology, are also
explained within this concept and this may be considered as its success.
Although some types of F2-layer Q-disturbances are obviously related to the
impact from below, the analyzed seasonal/latitudinal occurrence variations
are shown to have their origin in the thermosphere itself. |
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