IGGCAS OpenIR  > 地球与行星物理院重点实验室
An Eastward Current Encircling Mercury
Shi, Z.1,2; Rong, Z. J.1,2,3; Fatemi, S.4; Slavin, J. A.5; Klinger, L.6; Dong, C.7,8; Wang, L.7,8; Zhong, J.1,2,3; Raines, J. M.5; Holmstrom, M.9; Yuan, C. J.1,2,3; Barabash, S.9; Wei, Y.1,2,3
2022-05-28
Source PublicationGEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
Volume49Issue:10Pages:10
AbstractMercury has a terrestrial-like magnetosphere which is usually taken as a scaled-down-version of Earth's magnetosphere with a similar current system. We examine Mercury's magnetospheric current system based on a survey of Mercury's magnetic field measured by the Mercury Surface, Space Environment, Geochemistry, and Ranging spacecraft as well as computer simulations. We show that there is no significant Earth-like ring current flowing westward around Mercury, instead, we find, for the first time, an eastward current (EC) encircling the planet near the night-side magnetic equator with an altitude of similar to 500-1,000 km. The EC is closed with the dayside magnetopause current and could be driven by the gradient of plasma pressure as a diamagnetic current. Thus, Mercury's magnetosphere is not a scaled-down Earth magnetosphere, but a unique natural space plasma laboratory. Our findings offer fresh insights to analyze data from the BepiColombo mission, which is expected to orbit Mercury in 2025.
KeywordMercury Hermean magnetosphere eastward current
DOI10.1029/2022GL098415
Funding OrganizationStrategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA)
WOS KeywordMAGNETIC-FIELD ; SOLAR-WIND ; MESSENGER MAGNETOMETER ; SPATIAL-DISTRIBUTION ; ENERGETIC PARTICLE ; PLASMA SHEET ; MAGNETOSPHERE ; IONS ; SIMULATIONS ; INSTRUMENT
Language英语
Funding ProjectStrategic Priority Research Program of Chinese Academy of Sciences[XDB 41000000] ; National Natural Science Foundation of China[41922031] ; National Natural Science Foundation of China[41774188] ; Key Research Program of the Institute of Geology & Geophysics, CAS[IGGCAS-201904] ; Key Research Program of the Institute of Geology & Geophysics, CAS[IGGCAS-202102] ; Key Research Program of Chinese Academy of Sciences[ZDBS-SSW-TLC00103] ; Swedish Research Council (VR)[2018-03454] ; Swedish National Space Agency (SNSA)[115/18]
Funding OrganizationStrategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish Research Council (VR) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA) ; Swedish National Space Agency (SNSA)
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000799056800001
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105931
Collection地球与行星物理院重点实验室
Corresponding AuthorRong, Z. J.
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Mohe Observ Geophys, Beijing, Peoples R China
4.Umea Univ, Dept Phys, Umea, Sweden
5.Univ Michigan, Dept Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA
6.Peking Univ, Beijing Int Ctr Math Res, Beijing, Peoples R China
7.Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA
8.Princeton Univ, Dept Astrophys, Princeton, NJ 08544 USA
9.Swedish Inst Space Phys, Kiruna, Sweden
First Author AffilicationKey Laboratory of Earth and Planetary Physics, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Earth and Planetary Physics, Chinese Academy of Sciences;  Institute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Shi, Z.,Rong, Z. J.,Fatemi, S.,et al. An Eastward Current Encircling Mercury[J]. GEOPHYSICAL RESEARCH LETTERS,2022,49(10):10.
APA Shi, Z..,Rong, Z. J..,Fatemi, S..,Slavin, J. A..,Klinger, L..,...&Wei, Y..(2022).An Eastward Current Encircling Mercury.GEOPHYSICAL RESEARCH LETTERS,49(10),10.
MLA Shi, Z.,et al."An Eastward Current Encircling Mercury".GEOPHYSICAL RESEARCH LETTERS 49.10(2022):10.
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