DOI: 10.1029/2018JA025316
Scopus记录号: 2-s2.0-85052437993
论文题名: Enhancement of the Jovian Magnetospheric Plasma Circulation Caused by the Change in Plasma Supply From the Satellite Io
作者: Tsuchiya F. ; Yoshioka K. ; Kimura T. ; Koga R. ; Murakami G. ; Yamazaki A. ; Kagitani M. ; Tao C. ; Suzuki F. ; Hikida R. ; Yoshikawa I. ; Kasaba Y. ; Kita H. ; Misawa H. ; Sakanoi T.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期: 8 起始页码: 6514
结束页码: 6532
语种: 英语
英文关键词: HISAKI
; io
; Jupiter
; magnetosphere
; volcano
英文摘要: The innermost Galilean satellite, Io, supplies a large amount of volcanic gasses to the Jovian magnetosphere. The fast rotation of Jupiter and the outward transport of ionized gasses are responsible for forming a huge and rotationally dominant magnetosphere. The plasma supply from the satellite has a key role in the characterization of the Jovian magnetosphere. In fact, significant variations of the plasma population in the inner magnetosphere caused by the volcanic eruptions in Io were found in early 2015, using a continuous data set of the Io plasma torus obtained from an extreme ultraviolet spectroscope onboard the Hisaki satellite. The time evolution of the Io plasma torus radial distribution showed that the outward transport of plasma through 8 RJ from Jupiter was enhanced for approximately 2 months (from the end of January to the beginning of April 2015). Intense short-lived auroral brightenings––which represent transient energy releases in the outer part of the magnetosphere—occurred frequently during this period. The short-lived auroral brightenings accompanied well-defined sporadic enhancements of the ion brightness in the plasma torus, indicating a rapid inward transport of energy from the outer part of the magnetosphere and the resultant enhancement of hot electron population in the inner magnetosphere. This evidently shows that the change in a plasma source in the inner magnetosphere affects a large-scale radial circulation of mass and energy in a rotationally dominant magnetosphere. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113360
Appears in Collections: 气候减缓与适应
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作者单位: Planetary Plasma and Atmospheric Research Center, Tohoku University, Sendai, Japan; Department of Complexity Science and Engineering, University of Tokyo, Tokyo, Japan; Graduate school of Science, Tohoku University, Sendai, Japan; ISAS/JAXA, Sagamihara, Japan; NICT, Koganei, Japan
Recommended Citation:
Tsuchiya F.,Yoshioka K.,Kimura T.,et al. Enhancement of the Jovian Magnetospheric Plasma Circulation Caused by the Change in Plasma Supply From the Satellite Io[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(8)