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DOI | 10.1002/2017GL075108 |
Mechanisms of Saturn's Near-Noon Transient Aurora: In Situ Evidence From Cassini Measurements | |
Yao, Z. H.1,2; Radioti, A.1; Rae, I. J.2; Liu, J.3; Grodent, D.1; Ray, L. C.4; Badman, S. V.4; Coates, A. J.2; Gerard, J. -C.1; Waite, J. H.5; Yates, J. N.6; Shi, Q. Q.7; Wei, Y.8; Bonfond, B.1; Dougherty, M. K.9; Roussos, E.10; Sergis, N.11,12; Palmaerts, B.1 | |
2017-11-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:22 |
文章类型 | Article |
语种 | 英语 |
国家 | Belgium; England; USA; Spain; Peoples R China; Germany; Greece |
英文摘要 | Although auroral emissions at giant planets have been observed for decades, the physical mechanisms of aurorae at giant planets remain unclear. One key reason is the lack of simultaneous measurements in the magnetosphere while remote sensing of the aurora. We report a dynamic auroral event identified with the Cassini Ultraviolet Imaging Spectrograph (UVIS) at Saturn on 13 July 2008 with coordinated measurements of the magnetic field and plasma in the magnetosphere. The auroral intensification was transient, only lasting for similar to 30 min. The magnetic field and plasma are perturbed during the auroral intensification period. We suggest that this intensification was caused by wave mode conversion generated field-aligned currents, and we propose two potential mechanisms for the generation of this plasma wave and the transient auroral intensification. A survey of the Cassini UVIS database reveals that this type of transient auroral intensification is very common (10/11 time sequences, and similar to 10% of the total images). |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000419102300001 |
WOS关键词 | STATISTICAL-ANALYSIS ; PI2 PULSATIONS ; PLASMA SHEET ; ALFVEN WAVES ; RECONNECTION ; SLOW ; FLOW ; MAGNETOSPHERE ; MAGNETOTAIL ; INJECTIONS |
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/28988 |
专题 | 气候变化 |
作者单位 | 1.Univ Liege, STAR Inst, Lab Phys Atmospher & Planetaire, Liege, Belgium; 2.UCL Mullard Space Sci Lab, Dorking, Surrey, England; 3.Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA USA; 4.Univ Lancaster, Dept Phys, Lancaster, England; 5.Southwest Res Inst, San Antonio, TX USA; 6.European Space Astron Ctr ESA ESAC, Operat Dept, Madrid, Spain; 7.Shandong Univ, Sch Space Sci & Phys, Shandong Prov Key Lab Optic Astron & Solar Terr, Weihai, Peoples R China; 8.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China; 9.Imperial Coll, Fac Nat Sci, Dept Phys, London, England; 10.Max Planck Inst Solar Syst Res, Gottingen, Germany; 11.Acad Athens, Off Space Res & Technol, Athens, Greece; 12.Natl Observ Athens, Inst Astron Astrophys Space Applicat & Rem Sensin, Athens, Greece |
推荐引用方式 GB/T 7714 | Yao, Z. H.,Radioti, A.,Rae, I. J.,et al. Mechanisms of Saturn's Near-Noon Transient Aurora: In Situ Evidence From Cassini Measurements[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(22). |
APA | Yao, Z. H..,Radioti, A..,Rae, I. J..,Liu, J..,Grodent, D..,...&Palmaerts, B..(2017).Mechanisms of Saturn's Near-Noon Transient Aurora: In Situ Evidence From Cassini Measurements.GEOPHYSICAL RESEARCH LETTERS,44(22). |
MLA | Yao, Z. H.,et al."Mechanisms of Saturn's Near-Noon Transient Aurora: In Situ Evidence From Cassini Measurements".GEOPHYSICAL RESEARCH LETTERS 44.22(2017). |
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