globalchange  > 气候减缓与适应
DOI: 10.1002/2013GL058442
论文题名:
F region dusk ion temperature spikes at the equatorward edge of the high-latitude convection pattern
作者: Goodwin L.; St.-Maurice J.-P.; Richards P.; Nicolls M.; Hairston M.
刊名: Geophysical Research Letters
ISSN: 0094-10437
EISSN: 1944-10168
出版年: 2014
卷: 41, 期:2
起始页码: 300
结束页码: 307
语种: 英语
英文关键词: electric fields ; F region ion temperatures ; neutral winds
Scopus关键词: Electric fields ; F region ; Geomagnetism ; Plasma density ; Radar ; Convection patterns ; Frictional heating ; Geomagnetic conditions ; Incoherent scatter radar ; International polar year ; Ion temperature ; Neutral winds ; Plasmapause ; Ions ; air temperature ; atmospheric convection ; atmospheric electricity ; electric field ; F region ; geomagnetic field ; latitude ; plasma ; radar
英文摘要: Using Poker Flat Incoherent Scatter Radar data from the International Polar Year, we observed unexpected short-lived enhancements of a few 100 K in the F region ion temperature, or "Ti spikes", in conjunction with sharp F region plasma density drops near the dusk plasmapause. The geomagnetic conditions were moderately to weakly disturbed and the dusk spikes were often the largest Ti values recorded within the day. Taking various other observations into consideration, we conclude that the radar observed ion frictional heating events driven by large ion-neutral relative drifts caused by temporary intensifications in the convection pattern. The heating rate was enhanced through an increase in the size of the convection pattern, causing the neutrals just poleward of the dusk plasmapause to be moving antisunward while ions were moving sunward. ©2013. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892452145&doi=10.1002%2f2013GL058442&partnerID=40&md5=5f4e5eba37f40c477f0fa39e15ced9a8
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被引频次[WOS]:8   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7701
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作者单位: Institute of Space and Atmospheric Studies, University of Saskatchewan, Saskatoon, SK, Canada

Recommended Citation:
Goodwin L.,St.-Maurice J.-P.,Richards P.,et al. F region dusk ion temperature spikes at the equatorward edge of the high-latitude convection pattern[J]. Geophysical Research Letters,2014-01-01,41(2).
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