| DOI: | 10.1002/2015GL063250
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| 论文题名: | In situ observations of EMIC waves in O+ band by the Van Allen Probe A |
| 作者: | Yu X.; Yuan Z.; Wang D.; Li H.; Huang S.; Wang Z.; Zheng Q.; Zhou M.; Kletzing C.A.; Wygant J.R.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8925
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| EISSN: | 1944-8656
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| 出版年: | 2015
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| 卷: | 42, 期:5 | | 起始页码: | 1312
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| 结束页码: | 1317
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| 语种: | 英语
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| 英文关键词: | EMIC waves
; O+ ion torus
; oxygen band
; Van Allen Probes
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| Scopus关键词: | Geomagnetism
; Ions
; Magnetoplasma
; Magnetosphere
; Probes
; Geomagnetic activities
; In-situ observations
; Ion cyclotrons
; Magnetic local time
; Plasmasphere
; Spectra analysis
; Electromagnetic wave polarization
; atmospheric electricity
; in situ measurement
; magnetic field
; oxygen
; plasma
; polarization
; probe
; spectral analysis
; temporal analysis
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| 英文摘要: | Through polarization and spectra analysis of the magnetic field observed by the Van Allen Probe A, we present two typical cases of O+ band electromagnetic ion cyclotron (EMIC) waves in the outer plasmasphere or plasma trough. Although such O+ band EMIC waves are rarely observed, 18 different events of O+ band EMIC waves (16 events in the outer plasmasphere and two events in the plasma trough) are found from September 2012 to August 2014 with observations of the Van Allen Probe A. We find that the preferred region for the occurrence of O+ band EMIC waves is in L = 2-5 and magnetic local time = 03-13, 19-20, which is in accordance with the occurrence region of O+ ion torus. Therefore, our result suggests that the O+ ion torus in the outer plasmasphere during geomagnetic activities should play an important role in the generation of EMIC waves in O+ band. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925729223&doi=10.1002%2f2015GL063250&partnerID=40&md5=944b6a0d28401bc5b5ce55fca368cc40
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8541
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | School of Electronic Information, Wuhan University, Wuhan, China
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| Recommended Citation: | |
Yu X.,Yuan Z.,Wang D.,et al. In situ observations of EMIC waves in O+ band by the Van Allen Probe A[J]. Geophysical Research Letters,2015-01-01,42(5).
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