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DOI: 10.1002/2015GL065287
论文题名:
Three-dimensional structure in the Mars H corona revealed by IUVS on MAVEN
作者: Chaffin M.S.; Chaufray J.Y.; Deighan J.; Schneider N.M.; McClintock W.E.; Stewart A.I.F.; Thiemann E.; Clarke J.T.; Holsclaw G.M.; Jain S.K.; Crismani M.M.J.; Stiepen A.; Montmessin F.; Eparvier F.G.; Chamberlain P.C.; Jakosky B.M.
刊名: Geophysical Research Letters
ISSN: 0094-8525
EISSN: 1944-8256
出版年: 2015
卷: 42, 期:21
起始页码: 9001
结束页码: 9008
语种: 英语
英文关键词: atmospheric escape ; H corona ; jeans escape ; mars ; MAVEN ; water loss
Scopus关键词: Earth sciences ; Geophysics ; Atmospheric escape ; H corona ; Jeans escape ; Mars ; MAVEN ; Water loss ; Radiative transfer ; atmospheric structure ; corona ; electron density ; hydrogen ; light scattering ; Mars ; Martian atmosphere ; radiative transfer ; solar radiation ; symmetry ; ultraviolet radiation ; water exchange
英文摘要: Loss of water to space via neutral hydrogen escape has been an important process throughout Martian history. Contemporary loss rates can be constrained through observations of the extended neutral hydrogen atmosphere of Mars in scattered sunlight at 121.6 nm. Historically, such observations have been interpreted with coupled density and radiative transfer models, inferring escape fluxes from brightness profiles gathered by flybys, orbiters, and telescope observations. Here we demonstrate that the spherical symmetry assumed by prior analyses cannot reproduce observations by the Imaging Ultraviolet Spectrograph (IUVS) on the Mars Atmosphere and Volatile EvolutioN (MAVEN) mission. We present unique observations of the Mars H corona to large radial distances and mapping results from initial MAVEN science at Mars. These observations represent the first detection of three-dimensional structure in the H corona of Mars, with implications for understanding the atmosphere today and the loss of H to space throughout Martian history. © 2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955214867&doi=10.1002%2f2015GL065287&partnerID=40&md5=3c800f8db0396ac06c3a6b6eabe0099f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8141
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:
Chaffin M.S.,Chaufray J.Y.,Deighan J.,et al. Three-dimensional structure in the Mars H corona revealed by IUVS on MAVEN[J]. Geophysical Research Letters,2015-01-01,42(21).
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