| DOI: | 10.1002/2016GL069133
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| 论文题名: | Double-peak subauroral ion drifts (DSAIDs) |
| 作者: | He F.; Zhang X.-X.; Wang W.; Chen B.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8964
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| EISSN: | 1944-8695
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| 出版年: | 2016
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| 卷: | 43, 期:11 | | 起始页码: | 5554
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| 结束页码: | 5562
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| 语种: | 英语
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| 英文关键词: | double peak
; field-aligned currents
; midlatitude ionospheric trough
; subauroral ion drifts
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| Scopus关键词: | Statistical methods
; Defense Meteorological Satellite Programs
; Double layer region
; Double peak
; Field aligned currents
; Ionospheric parameters
; Magnetic local time
; Midlatitudes
; Subauroral ion drifts
; Ions
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| 英文摘要: | This paper reports double-peak subauroral ion drifts (DSAIDs), which is unique subset of subauroral ion drifts (SAIDs). A statistical analysis has been carried out for the first time with a database of 454 DSAID events identified from Defense Meteorological Satellite Program observations from 1987 to 2012. Both case studies and statistical analyses show that the two velocity peaks of DSAIDs are associated with two ion temperature peaks and two region-2 field-aligned currents (R2-FACs) peaks in the midlatitude ionospheric trough located in the low-conductance subauroral region. DSAIDs are regional and vary significantly with magnetic local time. DSAIDs can evolve from/to SAIDs during their lifetimes, which are from several minutes to tens of minutes. Comparisons between the ionospheric parameters of DSAIDs and SAIDs indicate that double-layer region-2 field-aligned currents (R2-FACs) may be the main driver of DSAIDs. It is also found that DSAIDs happen during more disturbed conditions compared with SAIDs. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84973149453&doi=10.1002%2f2016GL069133&partnerID=40&md5=7cc64ff0ad5ab958cbbb0a6d05dafbdf
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9927
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun, China
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| Recommended Citation: | |
He F.,Zhang X.-X.,Wang W.,et al. Double-peak subauroral ion drifts (DSAIDs)[J]. Geophysical Research Letters,2016-01-01,43(11).
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