Coupling between the Magnetospheric Dipolarization Front and the Earth’s Ionosphere by Ultralow-frequency Waves
文献类型：期刊论文
| 作者 | Qin,Pengfei3,4,5; Ge,Yasong3,4,5; Du,Aimin3,4,5; Huang,Can3,4,5; Zhang,Ying3,4,5; Luo,Hao3,4,5; Ou,Jiaming3,4,5; Zhang,Tielong1,2; shan,Lican3,4,5 |
| 刊名 | The Astrophysical Journal Letters
 |
| 出版日期 | 2020-05-01 |
| 卷号 | 895期号:1 |
| ISSN号 | 2041-8205 |
| 关键词 | Earth (planet) Alfven waves Geomagnetic fields |
| DOI | 10.3847/2041-8213/ab8e48 |
| 英文摘要 | Abstract Magnetosphere–ionosphere coupling is representative of a class of astrophysical problems involving the interaction between very different plasma regimes that are connected by magnetic fields. It is a major issue of the planet’s (e.g., Earth, Jupiter, Saturn) system how the magnetospheric plasma is coupled to the planet’s ionosphere/atmosphere. Due to their roles on energy transport and conversion in the terrestrial magnetosphere, dipolarization fronts (DFs) in the magnetotail have been intensively studied. While the energy may also be transported toward the ionosphere during the magnetosphere–ionosphere coupling, the coupling processes during DF events remain unclear. Using high-quality MMS and Swarm measurements, we present new conjugated observations of ultralow-frequency waves associated with the DF in the magnetotail and multiscale field-aligned currents (FACs) in the ionosphere. The tail large-amplitude low-frequency magnetic disturbances and associated FACs were found connected with a pair of ionospheric FACs near the magnetic footprints of MMS. The earthward field-aligned Poynting flux of low-frequency waves reveals the energy transport from the DF toward the ionosphere. Meanwhile, small-scale and highly temporal ionospheric FACs suggest that the magnetotail shear Alfvén waves may evolve into kinetic Alfvén waves during the coupling processes. This finding implies that a very localized dynamic process (e.g., DFs in the terrestrial magnetotail) in the magnetosphere could couple the ionosphere with Alfvén waves. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:2041-8205-895-1-AB8E48 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/96629]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 作者单位 | 1.Space Research Institute, Austrian Academy of Sciences, Graz, Austria 2.Harbin Institute of Technology, Shenzhen, People’s Republic of China 3.University of Chinese Academy of Sciences, Beijing, People’s Republic of China 4.Innovation Academy for Earth Science, Chinese Academy of Sciences, Beijing, People’s Republic of China 5.Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, People’s Republic of China ysge@mail.iggcas.ac.cn |
| 推荐引用方式 GB/T 7714 | Qin,Pengfei,Ge,Yasong,Du,Aimin,et al. Coupling between the Magnetospheric Dipolarization Front and the Earth’s Ionosphere by Ultralow-frequency Waves[J]. The Astrophysical Journal Letters,2020,895(1). |
| APA | Qin,Pengfei.,Ge,Yasong.,Du,Aimin.,Huang,Can.,Zhang,Ying.,...&shan,Lican.(2020).Coupling between the Magnetospheric Dipolarization Front and the Earth’s Ionosphere by Ultralow-frequency Waves.The Astrophysical Journal Letters,895(1). |
| MLA | Qin,Pengfei,et al."Coupling between the Magnetospheric Dipolarization Front and the Earth’s Ionosphere by Ultralow-frequency Waves".The Astrophysical Journal Letters 895.1(2020). |
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来源：地质与地球物理研究所
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