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The Impact and Mechanism of the Magnetic Inclination Angle on O+ Escape from Mars

文献类型：期刊论文

作者Li, Shibang5; Lu, Haoyu4,5; Cao, Jinbin4,5; Mazelle, Christian3; Cui, Jun2; Rong, Zhaojin6,7; Wild, James A.1; Yu, Yiqun4,5; Li, Xing4,5; Li, Yun5
刊名ASTROPHYSICAL JOURNAL
出版日期2022-05-01
卷号931期号:1页码:7
ISSN号0004-637X
DOI10.3847/1538-4357/ac6510
英文摘要Ion escape from the atmosphere to space is one of the most likely reasons to account for the evolution of the Martian climate. Based on three-dimensional multifluid magnetohydrodynamic simulations, we investigated the impact of the magnetic inclination angle on O+ escape at low altitudes of 275-1000 km under the typical solar wind conditions. Numerical results showed that an outward ion velocity in the direction opposite to the electromagnetic (EM) force results in weak outward flux and leads to ions becoming trapped by the horizontal magnetic field lines at the local horizontal magnetic equator. Much of the EM force can be attributed to the Hall electric force. In the region of high absolute magnetic inclination angle, the outward ion velocity has the same direction as the EM force, which increases the outward flux and causes ions to diffuse upward along open magnetic field lines to higher altitude. In addition, the EM force is mainly provided by the electron pressure gradient force and the motional electric force. Global results for the magnetic inclination angle indicate that the strong crustal field regions in the southern hemisphere are mainly occupied by magnetic field lines with high absolute magnetic inclination angle, while horizontal field lines are dominant in the northern hemisphere, which leads to a higher O+ escape rate in the Martian southern hemisphere than in the northern, from altitudes of 275 to 1000 km. This is a significant advance in understanding the impact and mechanism of the Martian magnetic field directions on ion escape.
WOS关键词ION ESCAPE ; SOLAR-WIND ; MARTIAN IONOSPHERE ; ATMOSPHERIC ESCAPE ; FIELD ; MAVEN ; CYCLE
资助项目B-type Strategic Priority Program of the Chinese Academy of Sciences[XDB41000000] ; China's National Space Administration (CNSA)[D020103] ; China's National Space Administration (CNSA)[D020105] ; National Natural Science Foundation of China (NSFC)[42074214] ; National Natural Science Foundation of China (NSFC)[41922031] ; National Natural Science Foundation of China (NSFC)[41821003] ; STFC Consolidated Grant[ST/R000816/1]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP Publishing Ltd
WOS记录号WOS:000799482000001
资助机构B-type Strategic Priority Program of the Chinese Academy of Sciences ; China's National Space Administration (CNSA) ; National Natural Science Foundation of China (NSFC) ; STFC Consolidated Grant ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; China's National Space Administration (CNSA) ; National Natural Science Foundation of China (NSFC) ; STFC Consolidated Grant ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; China's National Space Administration (CNSA) ; National Natural Science Foundation of China (NSFC) ; STFC Consolidated Grant ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; China's National Space Administration (CNSA) ; National Natural Science Foundation of China (NSFC) ; STFC Consolidated Grant
源URL[http://ir.iggcas.ac.cn/handle/132A11/105876]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Lu, Haoyu
作者单位1.Univ Lancaster, Dept Phys, Lancaster, England
2.Sun Yat Sen Univ, Sch Atmospher Sci, Zhuhai, Peoples R China
3.Univ Toulouse, Inst Rech Astrophys & Planetol, CNRS, CNES, Toulouse, France
4.Minist Ind & Informat Technol, Key Lab Space Environm Monitoring & Informat Proc, Beijing 100191, Peoples R China
5.Beihang Univ, Sch Space & Environm, Beijing 100191, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
7.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Li, Shibang,Lu, Haoyu,Cao, Jinbin,et al. The Impact and Mechanism of the Magnetic Inclination Angle on O+ Escape from Mars[J]. ASTROPHYSICAL JOURNAL,2022,931(1):7.
APA Li, Shibang.,Lu, Haoyu.,Cao, Jinbin.,Mazelle, Christian.,Cui, Jun.,...&Li, Guokan.(2022).The Impact and Mechanism of the Magnetic Inclination Angle on O+ Escape from Mars.ASTROPHYSICAL JOURNAL,931(1),7.
MLA Li, Shibang,et al."The Impact and Mechanism of the Magnetic Inclination Angle on O+ Escape from Mars".ASTROPHYSICAL JOURNAL 931.1(2022):7.

入库方式： OAI收割

来源：地质与地球物理研究所

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