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DOI: 10.1002/2015GL065005
论文题名:
Marsward and tailward ions in the near-Mars magnetotail: MAVEN observations
作者: Harada Y.; Halekas J.S.; McFadden J.P.; Mitchell D.L.; Mazelle C.; Connerney J.E.P.; Espley J.; Larson D.E.; Brain D.A.; DiBraccio G.A.; Curry S.M.; Hara T.; Livi R.; Ruhunusiri S.; Jakosky B.M.
刊名: Geophysical Research Letters
ISSN: 0094-8530
EISSN: 1944-8261
出版年: 2015
卷: 42, 期:21
起始页码: 8925
结束页码: 8932
语种: 英语
英文关键词: magnetotail ; Mars ; MAVEN ; planetary ions
Scopus关键词: Electric fields ; Magnetic fields ; Oxygen ; Magnetic field line ; Magnetotails ; Mars ; Mars atmosphere ; MAVEN ; Motional electric field ; Proton flux ; Volatile evolution ; Ions ; current direction ; electric field ; electron ; flux measurement ; ion exchange ; magnetic field ; magnetotail ; Martian atmosphere ; observational method ; oxygen ; statistical analysis ; Venus
英文摘要: We present Mars Atmosphere and Volatile EvolutioN (MAVEN) observations of Marsward and tailward fluxes of suprathermal (>25 eV) ions in the near-Mars (∼1-1.5 Mars radii downstream) magnetotail. Statistical results show that the Marsward proton flux and magnetic field draping pattern are well organized by the upstream motional electric field direction. We observe both significant Marsward proton fluxes and tightly wrapped magnetic field lines in the hemisphere pointed in the opposite direction to the upstream electric field. These characteristics are very similar to those observed at Venus. On the other hand, the net flux of oxygen ions points tailward on average in the Martian tail, while net Venusward flows of oxygen ions were observed frequently in the same hemisphere at Venus. The mechanism by which the Marsward proton flux is produced in the presence of tailward oxygen ion flux remains unclear. © 2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955201674&doi=10.1002%2f2015GL065005&partnerID=40&md5=8ed5dd741afa4253244061599b3e6e1c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8146
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: Space Sciences Laboratory, University of California, Berkeley, CA, United States

Recommended Citation:
Harada Y.,Halekas J.S.,McFadden J.P.,et al. Marsward and tailward ions in the near-Mars magnetotail: MAVEN observations[J]. Geophysical Research Letters,2015-01-01,42(21).
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