学術雑誌論文 Relationship between solar wind dynamic pressure and amplitude of geomagnetic sudden commencement (SC)

Araki, Tohru  ,  Shinbori, Atsuki

682016-05-28 , SpringerOpen
ISSN:1880-5981
内容記述
The local time variation of geomagnetic sudden commencements (SCs) has not been taken into account in the Siscoe's linear relationship which connects the SC amplitude with the corresponding dynamic pressure variation of the solar wind. By considering the physical background of SC, we studied which local time is best to extract the information of the solar wind dynamic pressure and concluded that the SC amplitude at 4-5 h local time of middle- and low-latitude stations most directly reflects the dynamic pressure effect. This result is used to re-check the order of magnitude of the largest 3 SCs observed since 1868.
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http://repository.kulib.kyoto-u.ac.jp/dspace/bitstream/2433/215839/1/s40623-016-0444-y.pdf

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