中文版 | English
Title

Properties of Plasmoids Observed in Saturn's Dayside and Nightside Magnetodisc

Author
Corresponding AuthorYao,Z. H.
Publication Years
2021-12-28
DOI
Source Title
ISSN
0094-8276
EISSN
1944-8007
Volume48Issue:24
Abstract

Plasmoid is a key structure for transferring magnetic flux and plasma in planetary magnetospheres. At Earth, plasmoids are key media which transfer energy and mass in the “Dungey Cycle.” For giant planets, plasmoids are primarily generated by the dynamic processes associated with “Vasyliunas cycle.” It is generally believed that planetary magnetotails are favorable for producing plasmoids. Nevertheless, recent studies reveal that magnetic field lines could be sufficiently stretched to allow magnetic reconnection in Saturn's dayside magnetodisc. In the study, we report direct observations of plasmoids in Saturn's dayside magnetodisc for the first time. Moreover, we perform a statistical investigation on the global plasmoid electron density distribution. The results show an inverse correlation between the nightside plasmoid electron density and local time, and the maximum plasmoid electron density around prenoon local time on the dayside. These results are consistent with the magnetospheric circulation picture associated with the “Vasyliunas cycle.”.

Keywords
URL[Source Record]
Indexed By
SCI ; EI
Language
English
Important Publications
NI Journal Papers
SUSTech Authorship
Others
Funding Project
National Natural Science Foundation of China[41922060] ; National Natural Science Foundation of China[42074211]
WOS Accession No
WOS:000735897000069
EI Accession Number
20215211396353
EI Keywords
Carrier Concentration ; Electron Density Measurement ; Electrons ; Magnetism ; Magnetoplasma ; Magnetosphere
ESI Classification Code
Atmospheric Properties:443.1 ; Extraterrestrial Physics And Stellar Phenomena:657.2 ; Electricity: Basic Concepts And Phenomena:701.1 ; Magnetism: Basic Concepts And Phenomena:701.2 ; Plasma Physics:932.3
ESI Research Field
GEOSCIENCES
Scopus EID
2-s2.0-85121729048
Data Source
Scopus
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/406289
DepartmentDepartment of Earth and Space Sciences
Affiliation
1.Key Laboratory of Earth and Planetary Physics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,China
2.Laboratory for Planetary and Atmospheric Physics,STAR Institute,Université de Liège,Liège,Belgium
3.Laboratory of Optical Astronomy and Solar-Terrestrial Environment,Institute of Space Sciences,School of Space Science and Physics,Shandong University,Weihai,China
4.College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing,China
5.UCL Mullard Space Science Laboratory,Dorking,United Kingdom
6.Department of Earth and Space Sciences,Southern University of Science and Technology (SUSTech),Shenzhen,China
7.Department of Earth Sciences,The University of Hong Kong,Hong Kong SAR,China
8.Institute of Space Physics and Applied Technology,School of Earth and Space Sciences,Peking University,Beijing,China
Recommended Citation
GB/T 7714
Xu,Y.,Guo,R. L.,Yao,Z. H.,et al. Properties of Plasmoids Observed in Saturn's Dayside and Nightside Magnetodisc[J]. GEOPHYSICAL RESEARCH LETTERS,2021,48(24).
APA
Xu,Y..,Guo,R. L..,Yao,Z. H..,Pan,D. X..,Dunn,W. R..,...&Coates,A. J..(2021).Properties of Plasmoids Observed in Saturn's Dayside and Nightside Magnetodisc.GEOPHYSICAL RESEARCH LETTERS,48(24).
MLA
Xu,Y.,et al."Properties of Plasmoids Observed in Saturn's Dayside and Nightside Magnetodisc".GEOPHYSICAL RESEARCH LETTERS 48.24(2021).
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