| DOI: | 10.1002/2014GL060081
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| 论文题名: | Discontinuities in the magnetic field near Enceladus |
| 作者: | Simon S.; Saur J.; Van Treeck S.C.; Kriegel H.; Dougherty M.K.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-10070
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| EISSN: | 1944-9801
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| 出版年: | 2014
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| 卷: | 41, 期:10 | | 起始页码: | 3359
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| 结束页码: | 3366
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| 语种: | 英语
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| 英文关键词: | Alfvén wing
; Cassini
; Enceladus
; magnetic field
; plasma interaction
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| Scopus关键词: | Electric losses
; Magnetic fields
; Magnetic flux
; Magnetosphere
; Plasma interactions
; Cassini
; Cassini magnetometer
; Coupling currents
; Enceladus
; Giant planets
; Magnetic field line
; Minimum variance analysis
; Surface normals
; Electromagnetic field effects
; discontinuity
; magnetic field
; magnetometer
; magnetosphere
; Moon
; Saturn
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| 英文摘要: | The plasma interaction of Saturn's icy moon Enceladus generates a hemisphere coupling current system that directly connects the giant planet's northern and southern polar magnetosphere. Based on Cassini magnetometer observations from all 20 targeted Enceladus flybys between 2004 and 2014, we study the magnetic field discontinuities associated with these hemisphere coupling currents. We identify a total number of 11 events during which the magnetic field was discontinuous at the surface of the Enceladus flux tube (defined by the bundle of magnetic field lines tangential to the solid body of the moon). A minimum variance analysis is applied to calculate the surface normals of these discontinuities. In agreement with theoretical expectations, the normals are found to be perpendicular to the surface of the Enceladus flux tube. The variation of the hemisphere coupling currents with Enceladean longitude leaves a clear imprint in the strengths of the observed magnetic field jumps as well. © 2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901383908&doi=10.1002%2f2014GL060081&partnerID=40&md5=387add60e65c3db692dcb48d6a5e8da0
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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/7334
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Institute of Geophysics and Meteorology, University of Cologne, Cologne, Germany
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| Recommended Citation: | |
Simon S.,Saur J.,Van Treeck S.C.,et al. Discontinuities in the magnetic field near Enceladus[J]. Geophysical Research Letters,2014-01-01,41(10).
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