| DOI: | 10.1002/2015GL066194
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| 论文题名: | The interaction between transpolar arcs and cusp spots |
| 作者: | Fear R.C.; Milan S.E.; Carter J.A.; Maggiolo R.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8395
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| EISSN: | 1944-8126
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| 出版年: | 2015
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| 卷: | 42, 期:22 | | 起始页码: | 9685
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| 结束页码: | 9693
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| 语种: | 英语
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| 英文关键词: | Cusp spot
; Lobe reconnection
; Transpolar arc
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| Scopus关键词: | Magnetosphere
; Cusp spot
; Effect of opening
; High-latitude magnetopause
; Interplanetary magnetic fields
; Lobe reconnection
; Magnetic reconnections
; Magnetotail lobes
; Transpolar arc
; Magnetism
; aurora
; flux measurement
; magnetic field
; magnetopause
; magnetosphere
; magnetotail
; polar front
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| 英文摘要: | Transpolar arcs and cusp spots are both auroral phenomena which occur when the interplanetary magnetic field is northward. Transpolar arcs are associated with magnetic reconnection in the magnetotail, which closes magnetic flux and results in a "wedge" of closed flux which remains trapped, embedded in the magnetotail lobe. The cusp spot is an indicator of lobe reconnection at the high-latitude magnetopause; in its simplest case, lobe reconnection redistributes open flux without resulting in any net change in the open flux content of the magnetosphere. We present observations of the two phenomena interacting - i.e., a transpolar arc intersecting a cusp spot during part of its lifetime. The significance of this observation is that lobe reconnection can have the effect of opening closed magnetotail flux. We argue that such events should not be rare. Key Points Lobe reconnection causes a net opening of closed flux if a transpolar arc is present This is indicated by the intersection of a cusp spot and a transpolar arc The link between lobe reconnection and TPA motion means such events should not be rare. ©2015. The Authors. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956915761&doi=10.1002%2f2015GL066194&partnerID=40&md5=a4fc3bcf60d949040fb0ccc43a7d857c
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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/8011
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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: | Department of Physics and Astronomy, University of Southampton, Southampton, United Kingdom
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| Recommended Citation: | |
Fear R.C.,Milan S.E.,Carter J.A.,et al. The interaction between transpolar arcs and cusp spots[J]. Geophysical Research Letters,2015-01-01,42(22).
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