The Impact of Crustal Magnetic Fields on the Thermal Structure of the Martian Upper Atmosphere

doi:10.3847/2041-8213/aaa89a

	The Impact of Crustal Magnetic Fields on the Thermal Structure of the Martian Upper Atmosphere
	Cui,J.1,2,3; Yelle,R. V.4; Zhao,L.-L.5; Stone,S.4; Jiang,F.-Y.3; Cao,Y.-T.3; Yao,M.-J.1; Koskinen,T. T.5; Wei,Y.6
刊名	The Astrophysical Journal Letters
	2018-02-02
卷号	853 期号:2
关键词	planets and satellites: individual (Mars)
ISSN号	2041-8205
DOI	10.3847/2041-8213/aaa89a
英文摘要	Abstract Using the Mars Atmosphere and Volatile Evolution Neutral Gas and Ion Mass Spectrometer data, we investigate the possible impact of crustal magnetic fields on the thermal structure of the Martian upper atmosphere. Our analysis reveals a clear enhancement in temperature over regions with strong crustal magnetic fields during two deep dip campaigns covering the periods of April 17–22 and September 2–8, both in 2015. Several controlling factors, such as solar EUV irradiance, relative atomic O abundance, and non-migrating tides, do not help to explain the observed temperature enhancement, and a magnetically driven scenario is favored. We evaluate the roles of several heating mechanisms that are likely modulated by the presence of crustal magnetic fields, including Joule heating, ion chemical heating, as well as electron impact heating via either precipitating solar wind electrons or locally produced photoelectrons. The respective heating rates of these mechanisms are substantially lower than the solar EUV heating rate, implying that none of them is able to interpret the observations.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:2041-8205-853-2-AAA89A
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/64216]
专题	中国科学院地质与地球物理研究所
作者单位	1.School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, Guangdong 519082, People’s Republic of China 2.Lunar and Planetary Science Laboratory, Macau University of Science and Technology, Macau, People’s Republic of China 3.Key Laboratory of Lunar and Deep Space Exploration, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China 4.Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, USA 5.School of Earth Sciences, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 6.Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, People’s Republic of China
推荐引用方式 GB/T 7714	Cui,J.,Yelle,R. V.,Zhao,L.-L.,et al. The Impact of Crustal Magnetic Fields on the Thermal Structure of the Martian Upper Atmosphere[J]. The Astrophysical Journal Letters,2018,853(2).
APA	Cui,J..,Yelle,R. V..,Zhao,L.-L..,Stone,S..,Jiang,F.-Y..,...&Wei,Y..(2018).The Impact of Crustal Magnetic Fields on the Thermal Structure of the Martian Upper Atmosphere.The Astrophysical Journal Letters,853(2).
MLA	Cui,J.,et al."The Impact of Crustal Magnetic Fields on the Thermal Structure of the Martian Upper Atmosphere".The Astrophysical Journal Letters 853.2(2018).