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Observation of Periodic Rising and Falling Tone ECH Waves at Saturn

文献类型：期刊论文

作者Teng, S.2,3,4; Wu, Y.2,3,4; Guo, R.1; Yao, Z.5; Tao, X.2,3,4
刊名GEOPHYSICAL RESEARCH LETTERS
出版日期2021-08-16
卷号48期号:15页码:10
关键词ECH waves Falling tone Rising tone Saturn
ISSN号0094-8276
DOI10.1029/2021GL094559
英文摘要Electron cyclotron harmonic (ECH) waves are effective in precipitating electrons into the loss cone to form diffuse aurora. Recent observations have shown that ECH waves at Earth could exhibit frequency chirping, which is an interesting feature of various plasma waves and whose mechanism is under intensive research. Whether chirping of ECH waves is also present in other planetary magnetospheres, however, is unknown. In this paper, we report the first observation of quasi-periodic ECH waves with frequency chirping at Saturn using Cassini data. The identified six falling tone and one rising tone ECH wave events occur at L<9 near the magnetic equator. The duration of ECH wave chirping elements lasts from seconds to minutes. Our findings suggest that frequency chirping of ECH waves could be observed at other planetary magnetosphere, and are useful to understand the fundamental mechanisms of frequency chirping of various plasma waves.
WOS关键词ELECTROSTATIC-WAVES ; GENERATION ; EMISSIONS ; RADIO
资助项目Strategic Priority Program of the Chinese Academy of Sciences[XDB41000000] ; China Postdoctoral Science Foundation[2020M682014] ; USTC Research Funds of the Double First-Class Initiative[WK2080000155] ; National Natural Science Foundation of China (NSFC)[41631071] ; Fundamental Research Funds for the Central Universities
WOS研究方向Geology
语种英语
WOS记录号WOS:000683512200010
出版者AMER GEOPHYSICAL UNION
资助机构Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; USTC Research Funds of the Double First-Class Initiative ; USTC Research Funds of the Double First-Class Initiative ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; USTC Research Funds of the Double First-Class Initiative ; USTC Research Funds of the Double First-Class Initiative ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; USTC Research Funds of the Double First-Class Initiative ; USTC Research Funds of the Double First-Class Initiative ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; USTC Research Funds of the Double First-Class Initiative ; USTC Research Funds of the Double First-Class Initiative ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities
源URL[http://ir.iggcas.ac.cn/handle/132A11/102613]  
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Teng, S.; Tao, X.
作者单位1.Shandong Univ, Inst Space Sci, Shandong Key Lab Opt Astron & Solar Terr Environm, Sch Space Sci & Phys, Weihai, Peoples R China
2.Univ Sci & Technol China, CAS Key Lab Geospace Environm, Dept Geophys & Planetary Sci, Hefei, Peoples R China
3.CAS Ctr Excellence Comparat Planetol, Hefei, Anhui, Peoples R China
4.Univ Sci & Technol China, Mengcheng Natl Geophys Observ, Hefei, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Teng, S.,Wu, Y.,Guo, R.,et al. Observation of Periodic Rising and Falling Tone ECH Waves at Saturn[J]. GEOPHYSICAL RESEARCH LETTERS,2021,48(15):10.
APA Teng, S.,Wu, Y.,Guo, R.,Yao, Z.,&Tao, X..(2021).Observation of Periodic Rising and Falling Tone ECH Waves at Saturn.GEOPHYSICAL RESEARCH LETTERS,48(15),10.
MLA Teng, S.,et al."Observation of Periodic Rising and Falling Tone ECH Waves at Saturn".GEOPHYSICAL RESEARCH LETTERS 48.15(2021):10.

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来源：地质与地球物理研究所

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