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DOI | 10.1029/2021GL095757 |
Observation and fully-thermal simulation of quasi-electrostatic magnetosonic waves | |
Zhonglei Gao; Si Liu; Fuliang Xiao; Qinghua Zhou; Qian He; Tong Li; Xiongjun Shang; Chang Yang; Sai Zhang; Qiwu Yang | |
2021-12-03 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | Magnetosonic (MS) waves are generally considered as electromagnetic harmonic fluctuations below the lower hybrid frequency. Here we present a correlated observation of proton ring-like distribution and low harmonic magnetosonic waves with undetectable magnetic components (called QEMS). We conduct fully-thermal simulations (WHAMP) to investigate the wave properties. The calculated growth rates can reproduce the observed spectral characteristics and demonstrate that the QEMS waves are excited as ion Bernstein modes by proton ring-like distribution. The ratios between the wave electric and magnetic amplitudes E/B given by WHAMP indicate that the magnetic spectral densities are below the instrument noise level, and the ratios are ∼ 7 − 80 times larger than the wave phase speeds Vph, suggesting that the QEMS waves are essentially quasi-electrostatic, not just visually quasi-electrostatic due to the measurement limit. This study provides further insights into the QEMS natures. |
领域 | 气候变化 |
URL | 查看原文 |
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/343104 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Zhonglei Gao,Si Liu,Fuliang Xiao,et al. Observation and fully-thermal simulation of quasi-electrostatic magnetosonic waves[J]. Geophysical Research Letters,2021. |
APA | Zhonglei Gao.,Si Liu.,Fuliang Xiao.,Qinghua Zhou.,Qian He.,...&Qiwu Yang.(2021).Observation and fully-thermal simulation of quasi-electrostatic magnetosonic waves.Geophysical Research Letters. |
MLA | Zhonglei Gao,et al."Observation and fully-thermal simulation of quasi-electrostatic magnetosonic waves".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
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