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DOI | 10.1002/2017GL073420 |
Van Allen Probes observations of whistler-mode chorus with long-lived oscillating tones | |
Gao, Zhonglei1,2,3; Su, Zhenpeng1,2; Chen, Lunjin4; Zheng, Huinan1,2; Wang, Yuming1; Wang, Shui1 | |
2017-06-28 | |
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:12 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Whistler-mode chorus plays an important role in the radiation belt electron dynamics. In the frequency-time spectrogram, chorus often appears as a hiss-like band and/or a series of short-lived (up to similar to 1s) discrete elements. Here we present some rarely reported chorus emissions with long-lived (up to 25s) oscillating tones observed by the Van Allen Probes in the dayside (MLT similar to 9-14) midlatitude (|MLAT|> 15 degrees) region. An oscillating tone can behave either regularly or irregularly and can even transform into a nearly constant tone (with a relatively narrow frequency sweep range). We suggest that these highly coherent oscillating tones were generated naturally rather than being related to some artificial VLF transmitters. Possible scenarios for the generation of the oscillating tone chorus are as follows: (1) being nonlinearly triggered by the accompanying hiss-like bands or (2) being caused by the modulation of the wave source. The details of the generation and evolution of such a long-lived oscillating tone chorus need to be investigated both theoretically and experimentally in the future. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000405854200005 |
WOS关键词 | RADIATION-BELT ELECTRONS ; LOW-FREQUENCY EMISSIONS ; MAGNETOSPHERIC CHORUS ; NUMERICAL-SIMULATION ; MAGNETIC STORMS ; VLF EMISSIONS ; ACCELERATION ; PARTICLE ; WAVES ; PLASMA |
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/26700 |
专题 | 气候变化 |
作者单位 | 1.Univ Sci & Technol China, Dept Geophys & Planetary Sci, CAS Key Lab Geospace Environm, Hefei, Peoples R China; 2.Univ Sci & Technol China, Collaborat Innovat Ctr Astronaut Sci & Technol, Hefei, Peoples R China; 3.Univ Sci & Technol China, Sch Earth & Space Sci, Mengcheng Natl Geophys Observ, Hefei, Peoples R China; 4.Univ Texas Dallas, Dept Phys, Richardson, TX 75083 USA |
推荐引用方式 GB/T 7714 | Gao, Zhonglei,Su, Zhenpeng,Chen, Lunjin,et al. Van Allen Probes observations of whistler-mode chorus with long-lived oscillating tones[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(12). |
APA | Gao, Zhonglei,Su, Zhenpeng,Chen, Lunjin,Zheng, Huinan,Wang, Yuming,&Wang, Shui.(2017).Van Allen Probes observations of whistler-mode chorus with long-lived oscillating tones.GEOPHYSICAL RESEARCH LETTERS,44(12). |
MLA | Gao, Zhonglei,et al."Van Allen Probes observations of whistler-mode chorus with long-lived oscillating tones".GEOPHYSICAL RESEARCH LETTERS 44.12(2017). |
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