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DOI | 10.1038/s41467-020-15506-3 |
Plasmapause surface wave oscillates the magnetosphere and diffuse aurora | |
Fei He; Rui-Long Guo; William R. Dunn; Zhong-Hua Yao; Hua-Sen Zhang; Yi-Xin Hao; Quan-Qi Shi; Zhao-Jin Rong; Jiang Liu; An-Min Tian; Xiao-Xin Zhang; Yong Wei; Yong-Liang Zhang; Qiu-Gang Zong; Zu-Yin Pu; Wei-Xing Wan | |
2020-04-03 | |
发表期刊 | Nature |
出版年 | 2020 |
英文摘要 | Energy circulation in geospace lies at the heart of space weather research. In the inner magnetosphere, the steep plasmapause boundary separates the cold dense plasmasphere, which corotates with the planet, from the hot ring current/plasma sheet outside. Theoretical studies suggested that plasmapause surface waves related to the sharp inhomogeneity exist and act as a source of geomagnetic pulsations, but direct evidence of the waves and their role in magnetospheric dynamics have not yet been detected. Here, we show direct observations of a plasmapause surface wave and its impacts during a geomagnetic storm using multi-satellite and ground-based measurements. The wave oscillates the plasmapause in the afternoon-dusk sector, triggers sawtooth auroral displays, and drives outward-propagating ultra-low frequency waves. We also show that the surface-wave-driven sawtooth auroras occurred in more than 90% of geomagnetic storms during 2014鈥?018, indicating that they are a systematic and crucial process in driving space energy dissipation. |
领域 | 资源环境 |
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/249600 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Fei He,Rui-Long Guo,William R. Dunn,et al. Plasmapause surface wave oscillates the magnetosphere and diffuse aurora[J]. Nature,2020. |
APA | Fei He.,Rui-Long Guo.,William R. Dunn.,Zhong-Hua Yao.,Hua-Sen Zhang.,...&Wei-Xing Wan.(2020).Plasmapause surface wave oscillates the magnetosphere and diffuse aurora.Nature. |
MLA | Fei He,et al."Plasmapause surface wave oscillates the magnetosphere and diffuse aurora".Nature (2020). |
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