Giant Pulsations Excited by a Steep Earthward Gradient of Proton Phase Space Density: Arase Observation

doi:10.1029/2018GL078293

GSTDTAP > 气候变化

DOI	10.1029/2018GL078293
	Giant Pulsations Excited by a Steep Earthward Gradient of Proton Phase Space Density: Arase Observation
	Yamamoto, Kazuhiro 1; Nose, Masahito 1; Kasahara, Satoshi 2; Yokota, Shoichiro 3; Keika, Kunihiro 2; Matsuoka, Ayako 4; Teramoto, Mariko 5; Takahashi, Kazue 6; Oimatsu, Satoshi 1; Nomura, Reiko 4; Vellante, Massimo 7; Heilig, Balazs 8; Fujimoto, Akiko 9; Tanaka, Yoshimasa 10; Shinohara, Manabu 11; Shinohara, Iku 4; Miyoshi, Yoshizumi 5
	2018-07-28
发表期刊	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
EISSN	1944-8007
出版年	2018
卷号	45 期号:14 页码:6773-6781
文章类型	Article
语种	英语
国家	Japan; USA; Italy; Hungary
英文摘要	We present observational evidence of drift resonance between westward propagating odd mode standing ultralow frequency waves and energetic protons. Compressional similar to 13 mHz (Pc4 band) waves and proton flux oscillations at >50 keV were detected at similar to 03 hr magnetic local time by the Arase satellite on 15 April 2017. The azimuthal wave number (m number) is estimated to be similar to-50 from ground observations, while the theory of drift resonance gives m similar to-49 for odd mode waves and similar to 110-keV protons, providing evidence that the drift resonance indeed took place in this event. We also found a steep earthward gradient of proton phase space density, which can quantitatively explain the wave excitation. The observed waves show typical features of giant pulsations (Pgs), regarding local time, m number, and flux oscillations. This study, therefore, has great implications to the field line mode structure and excitation mechanism of Pgs.
英文关键词	Arase giant pulsation drift resonance ULF inner magnetosphere ring current
领域	气候变化
收录类别	SCI-E
WOS记录号	WOS:000442582100003
WOS关键词	DRIFT-BOUNCE RESONANCE ; ALLEN PROBES OBSERVATIONS ; TRAPPED-PARTICLES ; ALFVEN WAVES ; MAGNETOSPHERE ; GENERATION ; SATELLITE ; MECHANISM ; NIGHTSIDE ; FIELD
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/28273
专题	气候变化
作者单位	1.Kyoto Univ, Grad Sch Sci, Kyoto, Japan; 2.Univ Tokyo, Tokyo, Japan; 3.Osaka Univ, Osaka, Japan; 4.Japan Aerosp Explorat Agcy, Tokyo, Japan; 5.Nagoya Univ, Inst Space Earth Environm Res, Nagoya, Aichi, Japan; 6.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA; 7.Univ Aquila, Dept Phys & Chem Sci, Laquila, Italy; 8.Min & Geol Survey Hungary, Budapest, Hungary; 9.Kyushu Univ, Int Ctr Space Weather Sci & Educ, Fukuoka, Fukuoka, Japan; 10.Natl Inst Polar Res, Tachikawa, Tokyo, Japan; 11.Kagoshima Coll, Natl Inst Technol, Kagoshima, Japan
推荐引用方式 GB/T 7714	Yamamoto, Kazuhiro,Nose, Masahito,Kasahara, Satoshi,et al. Giant Pulsations Excited by a Steep Earthward Gradient of Proton Phase Space Density: Arase Observation[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(14):6773-6781.
APA	Yamamoto, Kazuhiro.,Nose, Masahito.,Kasahara, Satoshi.,Yokota, Shoichiro.,Keika, Kunihiro.,...&Miyoshi, Yoshizumi.(2018).Giant Pulsations Excited by a Steep Earthward Gradient of Proton Phase Space Density: Arase Observation.GEOPHYSICAL RESEARCH LETTERS,45(14),6773-6781.
MLA	Yamamoto, Kazuhiro,et al."Giant Pulsations Excited by a Steep Earthward Gradient of Proton Phase Space Density: Arase Observation".GEOPHYSICAL RESEARCH LETTERS 45.14(2018):6773-6781.