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DOI | 10.1002/2017GL074447 |
Coordinated observations of two types of diffuse auroras near magnetic local noon by Magnetospheric Multiscale mission and ground all-sky camera | |
Han, D. -S.1; Li, J. -X.2; Nishimura, Y.2,3,4; Lyons, L. R.2; Bortnik, J.2; Zhou, M.5; Liu, J. -J.1; Hu, Z. -J.1; Hu, H. -Q.1; Yang, H. -G.1; Fuselier, S. A.6,7; Le Contel, O.8; Ergun, R. E.9,10; Malaspina, D.10; Lindqvist, P. -A.11; Pollock, C. J.12 | |
2017-08-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:16 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA; France; Sweden |
英文摘要 | Structured diffuse auroras are often observed near magnetic local noon (MLN), but their generation mechanisms are poorly understood. We have found that two types of structured diffuse auroras with obviously different dynamical properties often coexist near MLN. One type usually drifts from low to high latitude with higher speed and shows pulsation. The other type is always adjacent to the discrete aurora oval and drifts together with nearby discrete aurora with much lower speed. Using coordinated observations from MMS and ground all-sky imagers, we found that the two types of diffuse auroras are well correlated with number density increase of O+ (from the ionosphere) and of He2+ (from magnetosheath) ions, respectively. These observations indicate that mangetosheath particles penetrated into the magnetosphere also can play an important role for producing the dayside diffuse aurora. In addition, for the first time, electron cyclotron harmonic waves are observed associated with dayside diffuse aurora. |
英文关键词 | diffuse aurora dayside diffuse aurora cold plasmas ECH wave throat aurora MMS |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000410658800005 |
WOS关键词 | CYCLOTRON HARMONIC-WAVES ; LATITUDE BOUNDARY-LAYER ; DAYSIDE ; PRECIPITATION ; FIELD ; MAGNETOPAUSE ; CONVECTION ; SCATTERING ; SIGNATURES ; PATCHES |
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/27532 |
专题 | 气候变化 |
作者单位 | 1.Polar Res Inst China, SOA Key Lab Polar Sci, Shanghai, Peoples R China; 2.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA USA; 3.Boston Univ, Dept Elect & Comp Engn, Boston, MA 02215 USA; 4.Boston Univ, Ctr Space Phys, Boston, MA 02215 USA; 5.Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA USA; 6.Southwest Res Inst, San Antonio, TX USA; 7.Univ Texas San Antonio, Dept Phys & Astron, San Antonio, TX USA; 8.Lab Phys Plasmas, Paris, France; 9.Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA; 10.Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA; 11.KTH Royal Inst Technol, Sch Elect Engn, Stockholm, Sweden; 12.Denali Sci, Healy, AK USA |
推荐引用方式 GB/T 7714 | Han, D. -S.,Li, J. -X.,Nishimura, Y.,et al. Coordinated observations of two types of diffuse auroras near magnetic local noon by Magnetospheric Multiscale mission and ground all-sky camera[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(16). |
APA | Han, D. -S..,Li, J. -X..,Nishimura, Y..,Lyons, L. R..,Bortnik, J..,...&Pollock, C. J..(2017).Coordinated observations of two types of diffuse auroras near magnetic local noon by Magnetospheric Multiscale mission and ground all-sky camera.GEOPHYSICAL RESEARCH LETTERS,44(16). |
MLA | Han, D. -S.,et al."Coordinated observations of two types of diffuse auroras near magnetic local noon by Magnetospheric Multiscale mission and ground all-sky camera".GEOPHYSICAL RESEARCH LETTERS 44.16(2017). |
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