DOI: 10.1002/2015GL064052
论文题名: MESSENGER observations of magnetospheric substorm activity in Mercury's near magnetotail
作者: Sun W.-J. ; Slavin J.A. ; Fu S. ; Raines J.M. ; Zong Q.-G. ; Imber S.M. ; Shi Q. ; Yao Z. ; Poh G. ; Gershman D.J. ; Pu Z. ; Sundberg T. ; Anderson B.J. ; Korth H. ; Baker D.N.
刊名: Geophysical Research Letters
ISSN: 0094-9365
EISSN: 1944-9096
出版年: 2015
卷: 42, 期: 10 起始页码: 3692
结束页码: 3699
语种: 英语
英文关键词: dipolarization
; field-aligned current
; magnetospheric substorm
; Mercury
Scopus关键词: Expansion
; Magnetic fields
; Magnetoplasma
; Magnetosphere
; Plasma sheaths
; Dipolarization
; Expansion phase
; Field aligned currents
; Magnetic-field intensity
; Magnetospheric substorms
; MErcury Surface
; Plasma measurement
; Substorm expansion
; Mercury (metal)
; magnetic field
; magnetosphere
; magnetotail
; Mercury (planet)
; plasma
; spacecraft
; spatiotemporal analysis
; storm
; temporal analysis
; timescale
英文摘要: MErcury Surface, Space ENviroment, GEochemistry, and Ranging (MESSENGER) magnetic field and plasma measurements taken during crossings of Mercury's magnetotail from 2011 to 2014 have been examined for evidence of substorms. A total of 26 events were found during which an Earth-like growth phase was followed by clear near-tail expansion phase signatures. During the growth phase, just as at Earth, the thinning of the plasma sheet and the increase of the magnetic field intensity in the lobe are observed, but the fractional increase in field intensity could be ∼3 to 5 times that at Earth. The average timescale of the growth phase is ∼1 min. The dipolarization that marks the initiation of the substorm expansion phase is only a few seconds in duration. During the expansion phase, lasting ∼1 min, the plasma sheet is observed to thicken and engulf the spacecraft. The duration of the substorm observed in this paper is consistent with previous observations of Mercury's Dungey cycle. The reconfiguration of the magnetotail during Mercury's substorm is very similar to that at Earth despite its very compressed timescale. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931561234&doi=10.1002%2f2015GL064052&partnerID=40&md5=ed7e445e82bd5e771c402f28012c69f2
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8980
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: School of Earth and Space Sciences, Peking University, Beijing, China
Recommended Citation:
Sun W.-J.,Slavin J.A.,Fu S.,et al. MESSENGER observations of magnetospheric substorm activity in Mercury's near magnetotail[J]. Geophysical Research Letters,2015-01-01,42(10).