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DOI | 10.1002/2017GL074254 |
Ion hole formation and nonlinear generation of electromagnetic ion cyclotron waves: THEMIS observations | |
Shoji, Masafumi1; Miyoshi, Yoshizumi1; Katoh, Yuto2; Keika, Kunihiro3; Angelopoulos, Vassilis4; Kasahara, Satoshi3; Asamura, Kazushi5; Nakamura, Satoko6; Omura, Yoshiharu6 | |
2017-09-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:17 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan; USA |
英文摘要 | Electromagnetic plasma waves are thought to be responsible for energy exchange between charged particles in space plasmas. Such an energy exchange process is evidenced by phase space holes identified in the ion distribution function and measurements of the dot product of the plasma wave electric field and the ion velocity. We develop a method to identify ion hole formation, taking into consideration the phase differences between the gyromotion of ions and the electromagnetic ion cyclotron (EMIC) waves. Using this method, we identify ion holes in the distribution function and the resulting nonlinear EMIC wave evolution from Time History of Events and Macroscale Interactions during Substorms (THEMIS) observations. These ion holes are key to wave growth and frequency drift by the ion currents through nonlinear wave-particle interactions, which are identified by a computer simulation in this study. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000411702400007 |
WOS关键词 | PARTICLE INTERACTION ANALYZER ; INSTRUMENT ; EMISSIONS |
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/27981 |
专题 | 气候变化 |
作者单位 | 1.Inst Space Earth Environm Res, Nagoya, Aichi, Japan; 2.Tohoku Univ, Dept Geophys, Grad Sch Sci, Sendai, Miyagi, Japan; 3.Univ Tokyo, Dept Earth & Planetary Sci, Grad Sch Sci, Tokyo, Japan; 4.Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90024 USA; 5.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Sagamihara, Kanagawa, Japan; 6.Kyoto Univ, Res Inst Sustainable Humanosphere, Uji, Japan |
推荐引用方式 GB/T 7714 | Shoji, Masafumi,Miyoshi, Yoshizumi,Katoh, Yuto,et al. Ion hole formation and nonlinear generation of electromagnetic ion cyclotron waves: THEMIS observations[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(17). |
APA | Shoji, Masafumi.,Miyoshi, Yoshizumi.,Katoh, Yuto.,Keika, Kunihiro.,Angelopoulos, Vassilis.,...&Omura, Yoshiharu.(2017).Ion hole formation and nonlinear generation of electromagnetic ion cyclotron waves: THEMIS observations.GEOPHYSICAL RESEARCH LETTERS,44(17). |
MLA | Shoji, Masafumi,et al."Ion hole formation and nonlinear generation of electromagnetic ion cyclotron waves: THEMIS observations".GEOPHYSICAL RESEARCH LETTERS 44.17(2017). |
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