EMIC Waves Converted From Equatorial Noise Due to M/Q=2 Ions in the Plasmasphere: Observations From Van Allen Probes and Arase

doi:10.1029/2019GL083024

GSTDTAP > 气候变化

DOI	10.1029/2019GL083024
	EMIC Waves Converted From Equatorial Noise Due to M/Q=2 Ions in the Plasmasphere: Observations From Van Allen Probes and Arase
	Miyoshi, Y.1; Matsuda, S.2; Kurita, S.1; Nomura, K.1; Keika, K.3; Shoji, M.1; Kitamura, N.3; Kasahara, Y.4; Matsuoka, A.2; Shinohara, I.2; Shiokawa, K.1; Machida, S.1; Santolik, O.5,6; Boardsen, S. A.7,8; Horne, R. B.9; Wygant, J. F.10
	2019-06-16
发表期刊	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
EISSN	1944-8007
出版年	2019
卷号	46 期号:11 页码:5662-5669
文章类型	Article
语种	英语
国家	Japan; Czech Republic; USA; England
英文摘要	Equatorial noise (EN) emissions are observed inside and outside the plasmapause. EN emissions are referred to as magnetosonic mode waves. Using data from Van Allen Probes and Arase, we found conversion from EN emissions to electromagnetic ion cyclotron (EMIC) waves in the plasmasphere and in the topside ionosphere. A low-frequency part of EN emissions becomes EMIC waves through branch splitting of EN emissions, and the mode conversion from EN to EMIC waves occurs around the frequency of M/Q = 2 (deuteron and/or alpha particles) cyclotron frequency. These processes result in plasmaspheric EMIC waves. We investigated the ion composition ratio by characteristic frequencies of EN emissions and EMIC waves and obtained ion composition ratios. We found that the maximum composition ratio of M/Q = 2 ions is similar to 10% below 3,000 km. The quantitative estimation of the ion composition will contribute to improving the plasma model of the deep plasmasphere and the topside ionosphere.
英文关键词	EMIC magnetsonic waves Arase Van Allen Probes plasmasphere M Q=2 ions
领域	气候变化
收录类别	SCI-E
WOS记录号	WOS:000477616200004
WOS关键词	MAGNETOSONIC WAVES ; SATELLITE AKEBONO ; CYCLOTRON WAVES ; PROPAGATION ; EMISSIONS ; MAGNETOSPHERE ; WHISTLER ; FREQUENCY ; EXCITATION ; VICINITY
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/184068
专题	气候变化
作者单位	1.Nagoya Univ, ISEE, Nagoya, Aichi, Japan; 2.ISAS JAXA, Sagamihara, Kanagawa, Japan; 3.Univ Tokyo, Grad Sch Sci, Tokyo, Japan; 4.Kanazawa Univ, Grad Sch Nat Sci & Technol, Kanazawa, Ishikawa, Japan; 5.Czech Acad Sci, Inst Atmospher Phys, Dept Space Phys, Prague, Czech Republic; 6.Charles Univ Prague, Fac Math & Phys, Prague, Czech Republic; 7.Univ Maryland Baltimore Cty, Goddard Planetary Heliophys Inst, Baltimore, MD 21228 USA; 8.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA; 9.British Antarctic Survey, Cambridge, England; 10.Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA
推荐引用方式 GB/T 7714	Miyoshi, Y.,Matsuda, S.,Kurita, S.,et al. EMIC Waves Converted From Equatorial Noise Due to M/Q=2 Ions in the Plasmasphere: Observations From Van Allen Probes and Arase[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(11):5662-5669.
APA	Miyoshi, Y..,Matsuda, S..,Kurita, S..,Nomura, K..,Keika, K..,...&Wygant, J. F..(2019).EMIC Waves Converted From Equatorial Noise Due to M/Q=2 Ions in the Plasmasphere: Observations From Van Allen Probes and Arase.GEOPHYSICAL RESEARCH LETTERS,46(11),5662-5669.
MLA	Miyoshi, Y.,et al."EMIC Waves Converted From Equatorial Noise Due to M/Q=2 Ions in the Plasmasphere: Observations From Van Allen Probes and Arase".GEOPHYSICAL RESEARCH LETTERS 46.11(2019):5662-5669.