The high-latitude ionosphere structure on 22 March, 1979 magnetic storm from multi-satellite and ground-based observation |
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Authors: | AT Karpachev LZ Biktash T Maruyama |
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Institution: | aInstitute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of Russian Acad. Sciences (IZMIRAN), Troitsk, Moscow Region 142190, Russia bNational Institute of Information and Communications Technology (NICT), 4-2-1, Nukui- Kitamchi, Koganey, Tokyo 184-8795, Japan |
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Abstract: | Variations in the high-latitude ionosphere structure during March 22, 1979 geomagnetic storm are examined. Electron density Ne and temperature Te from the Cosmos-900 satellite, NmF2, Ne and He+ from the ISS-b satellite, precipitation of soft electrons from the Intercosmos-19 satellite, and the global picture of the auroral electron precipitation from the DMSP, TIROS and P78 satellites are used. These multi-satellite databases allow us to investigate the storm-time variations in the locations of the following ionospheric structures: the day-time cusp, the equatorial boundary of the diffuse auroral precipitation (DPB), the main ionospheric trough (MIT), the day-time trough, the ring ionospheric trough (RIT) and the light ions trough (LIT). The variations in NmF2, Ne, He+ and Te in the high-latitude ionosphere for the different local time sectors are analyzed also. The features of the high-latitude ionospheric response to a strong magnetic storm are described. |
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Keywords: | Ionosphere Ionospheric trough Geomagnetic storm Electron precipitation |
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