Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL088853 |
Rapid Frequency Variations within Intense Chorus Wave Packets | |
X.‐; J. Zhang; D. Mourenas; A. V. Artemyev; V. Angelopoulos; W. S. Kurth; C. A. Kletzing; G. B. Hospodarsky | |
2020-07-08 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | Whistler‐mode chorus waves are responsible for electron acceleration in Earths radiation belts. It is unclear, however, whether the observed acceleration is still well‐described by quasi‐linear theory, or if this acceleration is due to intense waves that require nonlinear treatment. Here, we perform a comprehensive statistical analysis of intense lower‐band chorus wave packets to investigate the relationships between wave frequency variations, packet length, and wave amplitude, and their temporal variability. We find that 15% of the wave power is carried by long packets, with low frequency sweep rates (linear trend in time) that agree with the nonlinear theory of chorus wave growth. Eighty‐five percent of the wave power, however, comes from short packets with large frequency variations around the linear trend. The kappa‐like probability distribution of these variations is consistent with random superposition of different waves that could result in a destruction of nonlinear resonant interaction. |
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/283341 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | X.‐,J. Zhang,D. Mourenas,et al. Rapid Frequency Variations within Intense Chorus Wave Packets[J]. Geophysical Research Letters,2020. |
APA | X.‐.,J. Zhang.,D. Mourenas.,A. V. Artemyev.,V. Angelopoulos.,...&G. B. Hospodarsky.(2020).Rapid Frequency Variations within Intense Chorus Wave Packets.Geophysical Research Letters. |
MLA | X.‐,et al."Rapid Frequency Variations within Intense Chorus Wave Packets".Geophysical Research Letters (2020). |
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