中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院地球与行星物理重点实验室
A Long-Lasting Auroral Spiral Rotating Around Saturn's Pole

文献类型：期刊论文

作者Palmaerts, B.3; Yao, Z. H.2,3; Sergis, N.1,5; Guo, R. L.3; Grodent, D.3; Dialynas, K.1; Gerard, J. -C.3; Mitchell, D. G.4
刊名GEOPHYSICAL RESEARCH LETTERS
出版日期2020-11-28
卷号47期号:23页码:10
ISSN号0094-8276
DOI10.1029/2020GL088810
英文摘要The main ultraviolet auroral emission at Saturn consists of multiple structures forming a discontinuous ring of emission around the poles, occasionally organized in a global spiral. We present continuous observation of an auroral spiral rotating at similar to 85% of rigid corotation during several hours. Simultaneously, energetic neutral atom (ENA) emissions revealed a hot magnetospheric plasma population located in the same local time sector as the ends of the rotating spiral. Following plasma theory, we propose that pressure gradients induced by the energized plasma distorted the magnetospheric current system, resulting in the spiral morphology of the aurora. The rotating hot plasma was several times reenergized in the dusk sector during at least 2 days, generating a long-lasting auroral spiral. The ultraviolet spiral, the ENA emissions, and the ions revealed by this multi-instrument data set are three signatures of a magnetosphere-ionosphere coupling current system and of the associated hot plasma population rotating around Saturn. Key Points The main auroral emission forms a spiral observed during two consecutive days The spiral morphology is due to the presence of a hot plasma population in the magnetodisc The auroral spiral winds while the hot plasma bubble expands due to gradient and curvature drifts
WOS关键词FIELD-ALIGNED CURRENTS ; RING CURRENT ; MAGNETOSPHERE ; RECONNECTION
资助项目PRODEX program ; Belgian Federal Science Policy Office ; Incoming Postdocs in Sciences, Technology, Engineering, Materials and Agrobiotechnology (IPD-STEMA) project ; NASA[NAS5-97271] ; NASA[NNX07AJ69G] ; Office of Space Research and Technology of the Academy of Athens
WOS研究方向Geology
语种英语
WOS记录号WOS:000598677000026
出版者AMER GEOPHYSICAL UNION
资助机构PRODEX program ; PRODEX program ; Belgian Federal Science Policy Office ; Belgian Federal Science Policy Office ; Incoming Postdocs in Sciences, Technology, Engineering, Materials and Agrobiotechnology (IPD-STEMA) project ; Incoming Postdocs in Sciences, Technology, Engineering, Materials and Agrobiotechnology (IPD-STEMA) project ; NASA ; NASA ; Office of Space Research and Technology of the Academy of Athens ; Office of Space Research and Technology of the Academy of Athens ; PRODEX program ; PRODEX program ; Belgian Federal Science Policy Office ; Belgian Federal Science Policy Office ; Incoming Postdocs in Sciences, Technology, Engineering, Materials and Agrobiotechnology (IPD-STEMA) project ; Incoming Postdocs in Sciences, Technology, Engineering, Materials and Agrobiotechnology (IPD-STEMA) project ; NASA ; NASA ; Office of Space Research and Technology of the Academy of Athens ; Office of Space Research and Technology of the Academy of Athens ; PRODEX program ; PRODEX program ; Belgian Federal Science Policy Office ; Belgian Federal Science Policy Office ; Incoming Postdocs in Sciences, Technology, Engineering, Materials and Agrobiotechnology (IPD-STEMA) project ; Incoming Postdocs in Sciences, Technology, Engineering, Materials and Agrobiotechnology (IPD-STEMA) project ; NASA ; NASA ; Office of Space Research and Technology of the Academy of Athens ; Office of Space Research and Technology of the Academy of Athens ; PRODEX program ; PRODEX program ; Belgian Federal Science Policy Office ; Belgian Federal Science Policy Office ; Incoming Postdocs in Sciences, Technology, Engineering, Materials and Agrobiotechnology (IPD-STEMA) project ; Incoming Postdocs in Sciences, Technology, Engineering, Materials and Agrobiotechnology (IPD-STEMA) project ; NASA ; NASA ; Office of Space Research and Technology of the Academy of Athens ; Office of Space Research and Technology of the Academy of Athens
源URL[http://ir.iggcas.ac.cn/handle/132A11/99957]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Palmaerts, B.
作者单位1.Acad Athens, Off Space Res & Technol, Athens, Greece
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
3.Univ Liege, Space Sci Technol & Astrophys Res STAR Inst, Lab Phys Atmospher & Planetaire, Liege, Belgium
4.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA
5.Natl Observ Athens, Inst Astron Astrophys Space Applicat & Remote Sen, Athens, Greece
推荐引用方式
GB/T 7714		 Palmaerts, B.,Yao, Z. H.,Sergis, N.,et al. A Long-Lasting Auroral Spiral Rotating Around Saturn's Pole[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(23):10.
APA Palmaerts, B..,Yao, Z. H..,Sergis, N..,Guo, R. L..,Grodent, D..,...&Mitchell, D. G..(2020).A Long-Lasting Auroral Spiral Rotating Around Saturn's Pole.GEOPHYSICAL RESEARCH LETTERS,47(23),10.
MLA Palmaerts, B.,et al."A Long-Lasting Auroral Spiral Rotating Around Saturn's Pole".GEOPHYSICAL RESEARCH LETTERS 47.23(2020):10.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

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。