Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL079777 |
Substorm-Associated Ionospheric Flow Fluctuations During the 27 March 2017 Magnetic Storm: SuperDARN-Arase Conjunction | |
Hori, T.1; Nishitani, N.1; Shepherd, S. G.2; Ruohoniemi, J. M.3; Connors, M.4; Teramoto, M.1; Nakano, S.5; Seki, K.5; Takahashi, N.6; Kasahara, S.6; Yokota, S.7; Mitani, T.8; Takashima, T.8; Higashio, N.9; Matsuoka, A.8; Asamura, K.8; Kazama, Y.10; Wang, S. -Y.10; Tam, S. W. Y.11; Chang, T. -F.1; Wang, B. -J.10,12; Miyoshi, Y.1; Shinohara, I.8 | |
2018-09-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:18页码:9441-9449 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan; USA; Canada; Taiwan |
英文摘要 | Super Dual Auroral Radar Network (SuperDARN) observations show that ionospheric flow fluctuations of millihertz or lower-frequency range with horizontal velocities of a few hundred meters per second appeared in the subauroral to midlatitude region during a magnetic storm on 27 March 2017. A set of the radars have provided the first ever observations that the fluctuations propagate azimuthally both westward and eastward simultaneously, showing bifurcated phase propagation associated with substorm expansion. Concurrent observations near the conjugate site in the inner magnetosphere made by the Arase satellite provide evidence that multiple drifting clouds of electrons in the near-Earth equatorial plane were associated with the electric field fluctuations propagating eastward in the ionosphere. We interpret this event in terms of mesoscale pressure gradients carried by drifting ring current electrons that distort field lines one after another as they drift through the inner magnetosphere, causing eastward propagating ionospheric electric field fluctuations. Plain Language Summary Midlatitude ionospheric radars called SuperDARN observed azimuthally propagating fluctuations of ionospheric plasma flow in association with substorm expansion during a magnetic storm on 27 March 2017. The radar observations have shown for the first time that the flow fluctuations bifurcate toward eastward and westward simultaneously. The Arase satellite in the near-conjugate site of the eastward propagating ionospheric flow fluctuations in the inner magnetosphere saw repeated flux enhancement of energetic electrons. The good satellite-radar conjunction gives observational evidence that the eastward propagating ionospheric flow fluctuations are driven by eastward drifting pressure bumps of electrons injected into the inner magnetosphere upon substorm expansion. |
英文关键词 | SuperDARN ULF wave substorm injection ERG ring current electron M-I coupling |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447761300013 |
WOS关键词 | PC 5 WAVES ; GEOMAGNETIC-PULSATIONS ; AZIMUTHAL PROPAGATION ; ALFVEN WAVES ; MAGNETOSPHERE ; INSTABILITY ; DYNAMICS ; LATITUDE |
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/26025 |
专题 | 气候变化 |
作者单位 | 1.Nagoya Univ, Inst Space Earth Environm Res, Nagoya, Aichi, Japan; 2.Dartmouth Coll, Thayer Sch Engn, Hanover, NH 03755 USA; 3.Virginia Polytech Inst & State Univ, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24061 USA; 4.Athabasca Univ, Ctr Sci, Athabasca, AB, Canada; 5.Inst Stat Math, Tachikawa, Tokyo, Japan; 6.Univ Tokyo, Grad Sch Sci, Tokyo, Japan; 7.Osaka Univ, Grad Sch Sci, Osaka, Japan; 8.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Sagamihara, Kanagawa, Japan; 9.Japan Aerosp Explorat Agcy, Res & Dev Directorate, Sagamihara, Kanagawa, Japan; 10.Acad Sinica, Inst Astron & Astrophys, Taipei, Taiwan; 11.Natl Cheng Kung Univ, Inst Space & Plasma Sci, Tainan, Taiwan; 12.Natl Cent Univ, Grad Inst Space Sci, Taoyuan, Taiwan |
推荐引用方式 GB/T 7714 | Hori, T.,Nishitani, N.,Shepherd, S. G.,et al. Substorm-Associated Ionospheric Flow Fluctuations During the 27 March 2017 Magnetic Storm: SuperDARN-Arase Conjunction[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(18):9441-9449. |
APA | Hori, T..,Nishitani, N..,Shepherd, S. G..,Ruohoniemi, J. M..,Connors, M..,...&Shinohara, I..(2018).Substorm-Associated Ionospheric Flow Fluctuations During the 27 March 2017 Magnetic Storm: SuperDARN-Arase Conjunction.GEOPHYSICAL RESEARCH LETTERS,45(18),9441-9449. |
MLA | Hori, T.,et al."Substorm-Associated Ionospheric Flow Fluctuations During the 27 March 2017 Magnetic Storm: SuperDARN-Arase Conjunction".GEOPHYSICAL RESEARCH LETTERS 45.18(2018):9441-9449. |
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