globalchange  > 科学计划与规划
DOI: 10.1002/2015GL065346
论文题名:
Strong plume fluxes at Mars observed by MAVEN: An important planetary ion escape channel
作者: Dong Y.; Fang X.; Brain D.A.; McFadden J.P.; Halekas J.S.; Connerney J.E.; Curry S.M.; Harada Y.; Luhmann J.G.; Jakosky B.M.
刊名: Geophysical Research Letters
ISSN: 0094-8492
EISSN: 1944-8223
出版年: 2015
卷: 42, 期:21
起始页码: 8942
结束页码: 8950
语种: 英语
英文关键词: atmospheric escape ; ion escape ; Mars ; plume ; polar plume ; solar wind interaction
Scopus关键词: Electric fields ; Orbits ; Population statistics ; Solar wind ; Atmospheric escape ; Mars ; Plume ; Polar plumes ; Solar wind interactions ; Ions ; atmospheric convection ; atmospheric plume ; atmospheric structure ; coordinate ; electric field ; ion exchange ; Mars ; Martian atmosphere ; observational method ; solar wind ; spacecraft
英文摘要: We present observations by the Mars Atmosphere and Volatile EvolutioN (MAVEN) mission of a substantial plume-like distribution of escaping ions from the Martian atmosphere, organized by the upstream solar wind convection electric field. From a case study of MAVEN particle-and-field data during one spacecraft orbit, we identified three escaping planetary ion populations: plume fluxes mainly along the upstream electric field over the north pole region of the Mars-Sun-Electric field (MSE) coordinate system, antisunward ion fluxes in the tail region, and much weaker upstream pickup ion fluxes. A statistical study of O+ fluxes using 3 month MAVEN data shows that the plume is a constant structure with strong fluxes widely distributed in the MSE northern hemisphere, which constitutes an important planetary ion escape channel. The escape rate through the plume is estimated to be ~30% of the tailward escape and ~23% of the total escape for > 25 eV O+ ions. © 2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955202914&doi=10.1002%2f2015GL065346&partnerID=40&md5=ede4482896e729da39fa846e6956e6a0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8108
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: Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States

Recommended Citation:
Dong Y.,Fang X.,Brain D.A.,et al. Strong plume fluxes at Mars observed by MAVEN: An important planetary ion escape channel[J]. Geophysical Research Letters,2015-01-01,42(21).
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