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| Titel |
A study of the Joule and Lorentz inputs in the production of atmospheric gravity waves in the upper thermosphere |
| VerfasserIn |
R. L. Balthazor, R. J. Moffett, G. H. Millward |
| 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 ; 15, no. 6 ; Nr. 15, no. 6, S.779-785 |
| Datensatznummer |
250012840
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| Publikation (Nr.) |
 copernicus.org/angeo-15-779-1997.pdf |
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| Zusammenfassung |
| First results of a modelling study of
atmospheric gravity waves (AGWs) are presented. A fully-coupled global
thermosphere-ionosphere-plasmasphere model is used to examine the relative
importance of Lorentz forcing and Joule heating in the generation of AGWs. It is
found that Joule heating is the dominant component above 110km. The effects of
the direction of the Lorentz forcing component on the subsequent propagation of
the AGW are also addressed. It is found that enhancement of zonal E×B
forcing results in AGWs at F-region altitudes of similar magnitudes travelling
from the region of forcing in both poleward and equatorward directions, whilst
enhancement of equatorward meridional E×B forcing results in AGWs
travelling both poleward and equatorward, but with the magnitude of the poleward
wave severely attenuated compared with the equatorward wave |
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