DOI: 10.1002/2015GL063361
论文题名: The dayside reconnection voltage applied to Saturn's magnetosphere
作者: Masters A.
刊名: Geophysical Research Letters
ISSN: 0094-8753
EISSN: 1944-8484
出版年: 2015
卷: 42, 期: 8 起始页码: 2577
结束页码: 2585
语种: 英语
英文关键词: magnetic reconnection
; magnetopause
; magnetosphere
; magnetospheric dynamics
; Saturn
Scopus关键词: Magnetic fields
; Magnetopause
; Magnetosphere
; Planets
; Solar system
; Coupling functions
; Interplanetary magnetic fields
; Magnetic reconnections
; Magnetospheric dynamics
; Model prediction
; Planetary magnetic fields
; Planetary magnetosphere
; Saturn
; Interplanetary flight
; magnetic field
; magnetosphere
; numerical model
; Saturn
英文摘要: The ability of magnetic reconnection between interplanetary and planetary magnetic fields to drive a planetary magnetosphere can be quantified as the resulting voltage applied to the system. We present analytical model predictions of the dayside reconnection voltage at Saturn, a planet where solar wind driving has been the subject of debate. Model-predicted voltages are in reasonable agreement with adapted terrestrial coupling function estimates, as well as voltages inferred from auroral observations. The voltage is most sensitive to the interplanetary magnetic field (IMF). Combining the model with Cassini IMF observations suggests that the voltage is rarely high enough to compete with internal driving of Saturn's outer magnetosphere. The long-term average dayside (and nightside) voltage is ∼40 kV. We point out that the distribution of IMF strength at Saturn is not bimodal, despite the compression-rarefaction structure of the local heliosphere when the Cassini observations were made. ©2015. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929507145&doi=10.1002%2f2015GL063361&partnerID=40&md5=565acf5cda522ac3731c3f95d0a6c5ec
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8369
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: Blackett Laboratory, Imperial College London, London, United Kingdom
Recommended Citation:
Masters A.. The dayside reconnection voltage applied to Saturn's magnetosphere[J]. Geophysical Research Letters,2015-01-01,42(8).