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DOI | 10.1002/2017GL075711 |
Magnetospheric Multiscale Observations of Electron Scale Magnetic Peak | |
Yao, S. T.1,2; Shi, Q. Q.1; Guo, R. L.3; Yao, Z. H.4,5; Tian, A. M.1; Degeling, A. W.1; Sun, W. J.3; Liu, J.2; Wang, X. G.6; Zong, Q. G.7; Zhang, H.8,9; Pu, Z. Y.7; Wang, L. H.7; Fu, S. Y.7; Xiao, C. J.10; Russell, C. T.11; Giles, B. L.12; Feng, Y. Y.2; Xiao, T.1; Bai, S. C.1; Shen, X. C.1; Zhao, L. L.7; Liu, H.7 | |
2018-01-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:2页码:527-537 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; England; Belgium; USA |
英文摘要 | The sudden enhancements of magnetic strength, named magnetic peaks (MPs), are often observed in the magnetosheath of magnetized planets. They are usually identified as flux ropes (FRs) or magnetic mirror mode structures. Previous studies of MPs are mostly on the magnetohydrodynamics (MHD) scale. In this study, an electron scale MP is reported in the Earth magnetosheath. We present a typical case with a scale of similar to 7 electron gyroradii and a duration of similar to 0.18 s. A strong magnetic disturbance and associated electrical current are detected. Electron vortex is found perpendicular to the magnetic field line and is self-consist with the peak. We use multipoint spacecraft techniques to determine the propagation velocity of the MP structure and find that the magnetic peak does propagate relative to the plasma (ion) flow. This is very different from the magnetic mirror mode that does not propagate relative to the plasma flow. Furthermore, we developed an efficient method that can effectively distinguish "magnetic bottle like" and "FRs like" structures. The MP presented in this study is identified as magnetic bottle like type. The mechanism to generate the electron scale magnetic bottle like structure is still unclear, suggesting that new theory needs to be developed to understand such small-scale phenomena. |
英文关键词 | electron size electron vortex magnetic bottle magnetic peak magnetic mirror flux rope |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425514300006 |
WOS关键词 | FLUX-TRANSFER EVENTS ; FIELD-SWELLING INSTABILITY ; HIGH-LATITUDE MAGNETOPAUSE ; SOLAR-WIND ; MIRROR INSTABILITY ; PLASMA ; HOLES ; MAGNETOSHEATH ; RECONNECTION ; PROPAGATION |
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/27175 |
专题 | 气候变化 |
作者单位 | 1.Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai, Peoples R China; 2.Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing, Peoples R China; 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China; 4.Univ Coll London, Mullard Space Sci Lab, Dorking, Surrey, England; 5.Univ Liege, STAR Inst, Lab Phys Atmospher & Planetaire, Liege, Belgium; 6.Harbin Inst Technol, Dept Phys, Harbin, Heilongjiang, Peoples R China; 7.Peking Univ, Sch Earth & Space Sci, Beijing, Peoples R China; 8.Univ Alaska Fairbanks, Dept Phys, Fairbanks, AK USA; 9.Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99775 USA; 10.Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing, Peoples R China; 11.Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA USA; 12.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA |
推荐引用方式 GB/T 7714 | Yao, S. T.,Shi, Q. Q.,Guo, R. L.,et al. Magnetospheric Multiscale Observations of Electron Scale Magnetic Peak[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(2):527-537. |
APA | Yao, S. T..,Shi, Q. Q..,Guo, R. L..,Yao, Z. H..,Tian, A. M..,...&Liu, H..(2018).Magnetospheric Multiscale Observations of Electron Scale Magnetic Peak.GEOPHYSICAL RESEARCH LETTERS,45(2),527-537. |
MLA | Yao, S. T.,et al."Magnetospheric Multiscale Observations of Electron Scale Magnetic Peak".GEOPHYSICAL RESEARCH LETTERS 45.2(2018):527-537. |
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