DOI: 10.1002/grl.50405
论文题名: Effect of the ring current on preconditioning the magnetosphere for steady magnetospheric convection
作者: Juusola L. ; Partamies N. ; Tanskanen E.
刊名: Geophysical Research Letters
ISSN: 0094-9057
EISSN: 1944-8788
出版年: 2013
卷: 40, 期: 10 起始页码: 1917
结束页码: 1921
语种: 英语
英文关键词: SMC
; steady magnetospheric convection
Scopus关键词: Driving conditions
; Earth's magnetosphere
; Magnetic indices
; Magnetospheric convection
; Reconnection rate
; Ring currents
; SMC
; Solar wind data
; Magnetic flux
; Solar wind
; Magnetosphere
; atmospheric convection
; magnetosphere
; stabilization
; steady flow
英文摘要: Steady magnetospheric convection (SMC) occurs when reconnection rates on the dayside and in the distant tail are balanced. An enhanced ring current could support this, by stabilizing the tail against near-Earth reconnection and by facilitating the prompt return of magnetic flux to the dayside. We use 32 years of magnetic index and solar wind data to study the effect of the ring current on preconditioning Earth's magnetosphere for SMC. The ring current is found to be enhanced during SMCs. Solar wind driving is similar but the ring current is weaker before the SMC, and the ring current is similar but solar wind driving is either weaker or stronger after the SMC than during it. This indicates that the magnetosphere cannot enter the SMC mode until the ring current has enhanced sufficiently for the prevailing driving conditions, and that when the driving exceeds a certain level, the ring current stabilization will fail. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879923596&doi=10.1002%2fgrl.50405&partnerID=40&md5=cf00906b07860491db838bd9a696653d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6321
Appears in Collections: 气候减缓与适应
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作者单位: Finnish Meteorological Institute, P.O. Box 503, FI-00101 Helsinki, Finland
Recommended Citation:
Juusola L.,Partamies N.,Tanskanen E.. Effect of the ring current on preconditioning the magnetosphere for steady magnetospheric convection[J]. Geophysical Research Letters,2013-01-01,40(10).