| DOI: | 10.1002/2014GL059288
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| 论文题名: | Can magnetopause reconnection drive Saturn's magnetosphere? |
| 作者: | Masters A.; Fujimoto M.; Hasegawa H.; Russell C.T.; Coates A.J.; Dougherty M.K.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-10228
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| EISSN: | 1944-9959
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| 出版年: | 2014
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| 卷: | 41, 期:6 | | 起始页码: | 1862
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| 结束页码: | 1868
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| 语种: | 英语
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| 英文关键词: | magnetopause
; magnetosphere
; reconnection
; Saturn
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| Scopus关键词: | Electric fields
; Interplanetary flight
; Magnetosphere
; Planets
; Cassini
; Electric field strength
; Interplanetary magnetic fields
; Magnetospheric dynamics
; Northward IMF
; Production rates
; reconnection
; Saturn
; Magnetopause
; electric field
; magnetopause
; magnetosphere
; planetary atmosphere
; Saturn
; solar wind
|
| 英文摘要: | While solar wind-driven compression of Saturn's magnetosphere is an important trigger of magnetospheric dynamics, the importance of magnetopause reconnection has been the subject of debate. Here we use Cassini observations at Saturn's magnetopause to address this open issue. Measured conditions at the boundary suggest a typical reconnection electric field strength of order 0.01 mV m-1. Although the strongest reconnection electric fields correspond to a compressed magnetosphere, compressed conditions do not guarantee a relatively strong reconnection electric field at the magnetopause location sampled by the spacecraft. By considering northward Interplanetary Magnetic Field (IMF), we predict reconnection voltages (open magnetic flux production rates) for the strongest driving of Saturn's magnetosphere by magnetopause reconnection. The typical northward IMF reconnection voltage is less than 100 kV for a wide range of reconnection X line lengths. This suggests that magnetopause reconnection is not a major driver of dynamics in Saturn's magnetosphere, except possibly on rare occasions. © 2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896689448&doi=10.1002%2f2014GL059288&partnerID=40&md5=9b75245e9bf6eb412c3ac106411a0819
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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/7492
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan
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| Recommended Citation: | |
Masters A.,Fujimoto M.,Hasegawa H.,et al. Can magnetopause reconnection drive Saturn's magnetosphere?[J]. Geophysical Research Letters,2014-01-01,41(6).
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