Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL082789 |
Identifying STEVE's Magnetospheric Driver Using Conjugate Observations in the Magnetosphere and on the Ground | |
Chu, Xiangning1; Malaspina, David1; Gallardo-Lacourt, Bea2; Liang, Jun2; Andersson, Laila1; Ma, Qianli3; Artemyev, Anton4; Liu, Jiang3; Ergun, Robert E.1; Thaller, Scott1; Akbari, Hassanali1; Zhao, Hong1; Larsen, Brian5; Reeves, Geoffrey5; Wygant, John6; Breneman, Aaron6; Tian, Sheng6; Connors, Martin7; Donovan, Eric2; Archer, William8; MacDonald, Elizabeth A.9 | |
2019-11-21 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:22页码:12665-12674 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Canada |
英文摘要 | The magnetospheric driver of strong thermal emission velocity enhancement (STEVE) is investigated using conjugate observations when Van Allen Probes' footprint directly crossed both STEVE and stable red aurora (SAR) arc. In the ionosphere, STEVE is associated with subauroral ion drift features, including electron temperature peak, density gradient, and westward ion flow. The SAR arc at lower latitudes corresponds to regions inside the plasmapause with isotropic plasma heating, which causes redline-only SAR emission via heat conduction. STEVE corresponds to the sharp plasmapause boundary containing quasi-static subauroral ion drift electric field and parallel-accelerated electrons by kinetic Alfven waves. These parallel electrons could precipitate and be accelerated via auroral acceleration processes powered by Alfven waves propagating along the magnetic field with the plasmapause as a waveguide. The electron precipitation, superimposed on the heat conduction, could explain multiwavelength continuous STEVE emission. The green picket-fence emissions are likely optical manifestations of electron precipitation associated with wave structures traveling along the plasmapause. |
英文关键词 | STEVE subauroral ion drift stable red auroral arc plasmapause aurora kinetic Alfven wave |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000497601200001 |
WOS关键词 | SUBAURORAL ION DRIFTS ; AURORAL RED ARCS ; ELECTRIC-FIELD ; POLARIZATION JET ; ALFVEN WAVES ; PENETRATION ; CONSTELLATION ; ACCELERATION ; UNDULATIONS ; BOUNDARIES |
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/225067 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Univ Colorado, Atmospher & Space Phys Lab, Campus Box 392, Boulder, CO 80309 USA; 2.Univ Calgary, Dept Phys & Astron, Calgary, AB, Canada; 3.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA USA; 4.Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90024 USA; 5.Los Alamos Natl Lab, Los Alamos, NM USA; 6.Univ Minnesota, Dept Phys, Minneapolis, MN 55455 USA; 7.Athabasca Univ Observ, Athabasca, AB, Canada; 8.Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK, Canada; 9.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA |
推荐引用方式 GB/T 7714 | Chu, Xiangning,Malaspina, David,Gallardo-Lacourt, Bea,et al. Identifying STEVE's Magnetospheric Driver Using Conjugate Observations in the Magnetosphere and on the Ground[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(22):12665-12674. |
APA | Chu, Xiangning.,Malaspina, David.,Gallardo-Lacourt, Bea.,Liang, Jun.,Andersson, Laila.,...&MacDonald, Elizabeth A..(2019).Identifying STEVE's Magnetospheric Driver Using Conjugate Observations in the Magnetosphere and on the Ground.GEOPHYSICAL RESEARCH LETTERS,46(22),12665-12674. |
MLA | Chu, Xiangning,et al."Identifying STEVE's Magnetospheric Driver Using Conjugate Observations in the Magnetosphere and on the Ground".GEOPHYSICAL RESEARCH LETTERS 46.22(2019):12665-12674. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论