globalchange  > 科学计划与规划
DOI: 10.1002/2015GL067366
论文题名:
Weakening of Jupiter's main auroral emission during January 2014
作者: Badman S.V.; Bonfond B.; Fujimoto M.; Gray R.L.; Kasaba Y.; Kasahara S.; Kimura T.; Melin H.; Nichols J.D.; Steffl A.J.; Tao C.; Tsuchiya F.; Yamazaki A.; Yoneda M.; Yoshikawa I.; Yoshioka K.
刊名: Geophysical Research Letters
ISSN: 0094-9419
EISSN: 1944-9150
出版年: 2016
卷: 43, 期:3
起始页码: 988
结束页码: 997
语种: 英语
英文关键词: aurora ; field-aligned current ; Jupiter ; magnetosphere
Scopus关键词: Electron energy levels ; Electrons ; Magnetosphere ; Aurora ; Auroral emission ; Auroral oval ; Electron energies ; Field aligned currents ; Jupiters ; Low latitudes ; Source region ; Electron temperature ; aurora ; electron ; electron density ; Jupiter ; latitude ; magnetosphere ; magnitude ; plasma ; temperature profile
英文摘要: In January 2014 Jupiter's FUV main auroral oval decreased its emitted power by 70% and shifted equatorward by ∼1°. Intense, low-latitude features were also detected. The decrease in emitted power is attributed to a decrease in auroral current density rather than electron energy. This could be caused by a decrease in the source electron density, an order of magnitude increase in the source electron thermal energy, or a combination of these. Both can be explained either by expansion of the magnetosphere or by an increase in the inward transport of hot plasma through the middle magnetosphere and its interchange with cold flux tubes moving outward. In the latter case the hot plasma could have increased the electron temperature in the source region and produced the intense, low-latitude features, while the increased cold plasma transport rate produced the shift of the main oval. © 2016. The Authors.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84969335511&doi=10.1002%2f2015GL067366&partnerID=40&md5=0d898471bfcdfe9fa90322b24ae7deff
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10382
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: Physics Department, Lancaster University, Lancaster, United Kingdom

Recommended Citation:
Badman S.V.,Bonfond B.,Fujimoto M.,et al. Weakening of Jupiter's main auroral emission during January 2014[J]. Geophysical Research Letters,2016-01-01,43(3).
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