NDLI: Average profiles of the solar wind and outer radiation belt during the extreme flux enhancement of relativistic electrons at geosynchronous orbit

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Average profiles of the solar wind and outer radiation belt during the extreme flux enhancement of relativistic electrons at geosynchronous orbit

Content Provider	Semantic Scholar
Author	Kataoka, Ryuho Miyoshi, Yoshizumi
Copyright Year	2008
Abstract	We report average profiles of the solar wind and outer radiation belt during the extreme flux enhancement of relativistic electrons at geosynchronous orbit (GEO). It is found that seven of top ten extreme events at GEO during so- lar cycle 23 are associated with the magnetosphere inflation during the storm recovery phase as caused by the large-scale solar wind structure of very low dynamic pressure ( 650 km/s) to typical (400-500 km/s) in a few days. For the seven events, the solar wind parameters, geomagnetic activity indices, and relativistic electron flux and geomagnetic field at GEO are superposed at the local noon period of GOES satellites to in- vestigate the physical cause. The average profiles support the "double inflation" mechanism that the rarefaction of the solar wind and subsequent magnetosphere inflation are one of the best conditions to produce the extreme flux enhance- ment at GEO because of the excellent magnetic confinement of relativistic electrons by reducing the drift loss of trapped electrons at dayside magnetopause.
Starting Page	1335
Ending Page	1339
Page Count	5
File Format	PDF HTM / HTML
DOI	10.5194/angeo-26-1335-2008
Volume Number	26
Alternate Webpage(s)	https://www.ann-geophys.net/26/1335/2008/angeo-26-1335-2008.pdf
Alternate Webpage(s)	https://doi.org/10.5194/angeo-26-1335-2008
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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