Solar cycle, seasonal, and diurnal variations of subauroral ion drifts: Statistical results

	Solar cycle, seasonal, and diurnal variations of subauroral ion drifts: Statistical results
	He F.; Zhang X. X.; Chen B.
	2014
发表期刊	Journal of Geophysical Research-Space Physics
ISSN	ISBN/2169-9380
卷号	119 期号:6 页码:5076-5086
摘要	The solar cycle, seasonal, and diurnal variations of the subauroral ion drifts (SAIDs) are investigated for the first time to use such a large database of 18,226 SAID events observed by the DMSP satellites during 1987-2012. Statistical results show that SAIDs occur mostly at 60.1 degrees invariant latitude and 2230 magnetic local time with a typical half width of 0.57 degrees, move equatorward during high solar activities with large widths, and have two occurrence peaks in spring and fall equinoxes and two valleys in summer and winter solstices. The seasonal variation of SAID latitude has two valleys in spring and fall, and SAID width has a valley distribution with a minimum in summer. SAIDs exhibit a clear day-to-night difference in latitude. The diurnal variation of SAID width has a morning valley and an afternoon peak. The generation mechanism of SAID associated with the electron precipitation and the downward field-aligned current is also supported in this study.
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/44375
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	He F.,Zhang X. X.,Chen B.. Solar cycle, seasonal, and diurnal variations of subauroral ion drifts: Statistical results[J]. Journal of Geophysical Research-Space Physics,2014,119(6):5076-5086.
APA	He F.,Zhang X. X.,&Chen B..(2014).Solar cycle, seasonal, and diurnal variations of subauroral ion drifts: Statistical results.Journal of Geophysical Research-Space Physics,119(6),5076-5086.
MLA	He F.,et al."Solar cycle, seasonal, and diurnal variations of subauroral ion drifts: Statistical results".Journal of Geophysical Research-Space Physics 119.6(2014):5076-5086.

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