A systematic study of effects of solar wind density on auroral electrojets

J. H. Shue, Y. Kamide, Pat T. Newell

研究成果: 雜誌貢獻期刊論文同行評審

4 引文 斯高帕斯(Scopus)

摘要

The subject of effects of solar wind density (Np) on auroral electrojets has recently received increasing attention. For "unbiased" events in which only Np varied significantly but other solar wind parameters were relatively constant, we calculated rates of change of the auroral electrojets per unit change of Np (dAU/dNp and dAL/dNp). Here we report that the distribution of dAU/dNp and dAL/dNp binned by the Z component of interplanetary magnetic field (IMF) shows a butterfly pattern. The rates are found to be small for northward IMF. As the southward IMF becomes larger, the distribution bifurcates-one branch extending to positive rates and the other to negative rates. Although it has been commonly believed that the enhanced Np increases the auroral electrojets, the enhanced Np can also decrease the auroral electrojets with a 49% probability.

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頁(從 - 到)1-4
頁數4
期刊Geophysical Research Letters
32
發行號14
DOIs
出版狀態已出版 - 28 7月 2005

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