Magnetic storm characteristics of the thermosphere
1973; American Geophysical Union; Volume: 78; Issue: 13 Linguagem: Inglês
10.1029/ja078i013p02251
ISSN2156-2202
Autores Tópico(s)Geomagnetism and Paleomagnetism Studies
ResumoJournal of Geophysical Research (1896-1977)Volume 78, Issue 13 p. 2251-2264 Magnetic storm characteristics of the thermosphere H. G. Mayr, H. G. MayrSearch for more papers by this authorH. Volland, H. VollandSearch for more papers by this author H. G. Mayr, H. G. MayrSearch for more papers by this authorH. Volland, H. VollandSearch for more papers by this author First published: 1 May 1973 https://doi.org/10.1029/JA078i013p02251Citations: 131AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Energy and diffusive mass transport associated with the thermospheric circulation are considered in a self-consistent, though mathematically relatively simple, form to describe in a three-dimensional two-constitutent model magnetic storm characteristics in composition (N2, O, and He), temperature, and mass-density. It is shown that during disturbed conditions the latitudinal variations of composition and gas temperature Tg reflect the local nature of the magnetic storm heat input assumed to be primarily confined to the auroral zones. Thereby Tg and N2 increase, He decreases, and O remains constant through the auroral zones at exospheric heights (due to the superposition of temperature and diffusion effects) in agreement with Ogo 6 mass spectrometer measurements. In contrast, the magnetic storm response in the total mass density is characterized by a strong worldwide component and a relatively insignificant increase toward the poles, with the density peak occurring between 2 (poles) and 8 (equator) hours after the maximum energy input, in substantial agreement with satellite drag data. While in situ composition and satellite drag mass-density measurements can thus be reconciled, it must, however, be emphasized that the temperature derivation from the satellite drag data cannot be justified during disturbed conditions. References Carignan, G. R., C. A. Reber, The neutral atmosphere response to the large magnetic storm of March 8, 1970 (abstract), Eos Trans. AGU, 52, 871, 1971. Chandra, S., J. R. Herman, Fregion ionization and heating during magnetic storms, Planet. Space Sci., 17, 841, 1969. Cole, K. D., Joule heating of the upper atmosphere, Australian J. Phys., 15, 223, 1962. Cole, K. D., Joule heating of the ionosphere over Halley Bay, Nature, 199, 444, 1963. Cole, K. D., Electrodynamic heating and movement of the thermosphere, Planet. Space Sci., 19, 59, 1971. Duncan, R. A., Fregion seasonal and magnetic storm behavior, J. Atmos. Terr. Phys., 31, 59, 1969. Jacchia, L. G., Two atmospheric effects in the orbital acceleration of artificial satellites, Nature, 183, 526, 1959. Jacchia, L. G., J. Slowey, F. Veriani, Geomagnetic perturbations and upper atmospheric heating, J. Geophys. Res., 72, 1423, 1967. Kohl, H., J. W. King, Atmospheric winds between 100 and 400 km and their effects on the ionosphere, J. Atmos. Terr. Phys., 29, 1045, 1967. Mayr, H. G., H. Volland, Temporal variations in the thermospheric composition (abstract), Eos Trans. AGU, 51, 789, 1970. Mayr, H. G., H. Volland, Magnetic storm effects in the neutral composition, Planet. Space Sci., 20, 379, 1972a. Mayr, H. G., H. Volland, Theoretical model for the latitude dependence of the thermospheric annual and semiannual variations, J. Geophys. Res., 77, 6774, 1972b. Mayr, H. G., H. Volland, Two component model of the diurnal variations in the thermospheric composition, J. Atmos. Terr. Phys., 35, 669, 1973. Obayashi, T., N. Matuura, Theoretical model of F-region storms, Proc. Solar Terr. Phys., 4, 199, 1972. Obayashi, T., World wide electron density changes and associated thermospheric winds during an ionospheric storm, Planet. Space Sci., 20, 511, 1972. Roemer, M., Geomagnetic activity effect derived from Explorer 9 data, Roy. Soc. London, 262Ser. A, 184, 1967. Seaton, M. J., A possible explanation of the drop in F-region critical densities accompanying major ionospheric storms, J. Atmos. Terr. Phys., 8, 122, 1956. Taeusch, D. R., G. R. Carignan, C. A. Reber, Neutral composition variation above 400 kilometers during a magnetic storm, J. Geophys. Res., 27, 8318, 1971. Volland, H., H. G. Mayr, Response of the thermospheric density to auroral heating during geomagnetic disturbances, J. Geophys. Res., 76, 3764, 1971. Citing Literature Volume78, Issue13Space Physics1 May 1973Pages 2251-2264 ReferencesRelatedInformation
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