气候变化领域集成服务门户(CCPortal): Discrete Rising Tone Elements of Whistler-Mode Waves in the Vicinity of the Moon: ARTEMIS Observations

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DOI	10.1029/2020GL091100
	Discrete Rising Tone Elements of Whistler-Mode Waves in the Vicinity of the Moon: ARTEMIS Observations
	Sawaguchi W.; Harada Y.; Kurita S.
发表日期	2021
ISSN	0094-8276
卷号	48 期号:1
英文摘要	We report on discrete rising-tone elements of whistler-mode waves observed by Acceleration, Reconnection, Turbulence, and Electrodynamics of the Moon's Interaction with the Sun (ARTEMIS) in the vicinity of the Moon. The two-probe ARTEMIS observations suggest that a free energy source for the wave generation is provided by electron anisotropy resulting from lunar surface absorption and magnetic reflection. High time resolution dynamic spectra reveal that the waves consist of multiple rising tone elements, exhibiting striking similarities to the well-known whistler-mode chorus in planetary magnetospheres. The observed frequency sweep rates are generally consistent with those predicted by the nonlinear growth theory of chorus emissions by Omura et al. (2008, https://doi.org/10.1029/2007JA012622). These results imply that whistler-mode waves can grow nonlinearly into chorus-like emissions even around airless bodies without magnetospheres and that a well-defined dipole field is not a prerequisite for the chorus generation. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Free energy; Magnetoplasma; Magnetosphere; Moon; Chorus generation; Dynamic spectrum; Electron anisotropy; High-time resolution; Magnetic reflections; Planetary magnetosphere; Whistler-mode chorus; Whistler-mode waves; Atmospherics
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169243
作者单位	Department of Geophysics, Graduate School of Science, Kyoto University, Kyoto, Japan; Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Japan
推荐引用方式 GB/T 7714	Sawaguchi W.,Harada Y.,Kurita S.. Discrete Rising Tone Elements of Whistler-Mode Waves in the Vicinity of the Moon: ARTEMIS Observations[J],2021,48(1).
APA	Sawaguchi W.,Harada Y.,&Kurita S..(2021).Discrete Rising Tone Elements of Whistler-Mode Waves in the Vicinity of the Moon: ARTEMIS Observations.Geophysical Research Letters,48(1).
MLA	Sawaguchi W.,et al."Discrete Rising Tone Elements of Whistler-Mode Waves in the Vicinity of the Moon: ARTEMIS Observations".Geophysical Research Letters 48.1(2021).