Journal ArticleDOI
Ionospheric storm of 4–5 August 1972 in the Asia-Australia-Pacific sector
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TLDR
The ionospheric storm of 4-5 August 1972 was analyzed using data from 35 middle and low latitude ionosphere stations and 7 magnetic stations in the Asia-Australia-Pacific longitude sector as discussed by the authors.About:
This article is published in Journal of Atmospheric and Solar-Terrestrial Physics.The article was published on 1977-01-01. It has received 6 citations till now. The article focuses on the topics: Ionospheric storm & May 1921 geomagnetic storm.read more
Citations
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Some properties of upper atmosphere dynamics.
TL;DR: In this article, a unified description of important dynamic properties of the upper atmosphere in composition and temperature characteristic of a variety of phenomena, including diurnal and seasonal tides, magnetic storms, and momentum coupling with the magnetosphere, is provided.
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Travelling atmospheric disturbances as a possible explanation for daytime positive storm effects of moderate duration at middle latitudes
Gerd W. Prölss,M.J Jung +1 more
TL;DR: In this paper, the authors used N - h profiles, critical frequency data, and the AE index to find that daytime positive storm effects at middle latitudes are caused by uplifting of ionization and lag the onset of substorm activity by about 2.5 h.
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A comparative study of global ionospheric responses to intense magnetic storm conditions
E. P. Szuszczewicz,Mark Lester,P. Wilkinson,P. Blanchard,M. A. Abdu,R. Hanbaba,K. Igarashi,Sergey Pulinets,B. M. Reddy +8 more
TL;DR: In this paper, the authors report on a study of three intense ionospheric storms that occurred in September 1989 using Dst as a reference for storm onset and subsequent main and recovery phases, and analyze the observed worldwide responses of F region heights h m F 2 and densities N mF 2 as a function of universal and local times, latitudinal domains, and storm onset-times.
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F-region dynamics
H. G. Mayr,I. Harris +1 more
TL;DR: The U.S. research efforts in the last four years relating to an understanding of upper atmosphere or thermosphere and F-region dynamics are reported in this article, where simultaneous measurements of atmospheric parameters from the Atmosphere Explorer satellites were used in photochemistry and photoenergetics studies.
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Temporal and spatial variations in ionospheric electron density profiles over South Africa during strong magnetic storms
TL;DR: In this article, the variations in ionospheric electron density profiles over South Africa before and after the severe geomagnetic storms on 15 May 2005 were analyzed using computer-imaging techniques, and the results showed that electron density significantly increased at 10:00 UT, 15 May compared with that at the same period on 14 May.
References
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Thermospheric response to a magnetic substorm
Arthur D. Richmond,S. Matsushita +1 more
TL;DR: In this article, a computer model is used to simulate the winds and temperature variations in the thermosphere which result from auroral region electric currents during a large isolated magnetic substorm.
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Equatorial electrojet—I. Development of a model including winds and instabilities
TL;DR: In this paper, physical features of the equatorial electrojet were examined with the aid of a numerical model which includes neutral-air winds and the two-stream instability, and it was found that the model currents and resultant magnetic variations are relatively unaffected by assuming the parallel conductivity, σ 0, to be infinite.
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A study of the morphology of ionospheric storms
TL;DR: In this paper, a study was made of the variations of the maximum electron number density in the ionospheric F2 layer during magnetic storms, and the data were collected during the ten-year period 1946-1955, at 38 ionosphere stations between 60.4°N and 60.6° geomagnetic latitudes.
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F-Region Storms and Thermospheric Circulation
TL;DR: In this article, current ideas on mechanisms of storm effects in the ionospheric F-layer at mid-latitudes, and of how they depend on the thermospheric circulation are outlined.
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Theoretical models of ionospheric storms
TL;DR: In this paper, the electron density in the sunlit polar region and at the trough may be caused by polar atmospheric heating through two processes; one is the increased chemical reaction coefficients controlling the loss rate of electron density and the other is the decrease in atmospheric density ratio O/N2 near the turbopause caused by enhanced mixing by atmospheric gravity waves or by convective motion of the upper atmosphere.