globalchange  > 气候减缓与适应
DOI: 10.1002/grl.50124
论文题名:
Plasmaspheric filament: An isolated magnetic flux tube filled with dense plasmas
作者: Murakami G.; Yoshikawa I.; Yoshioka K.; Yamazaki A.; Kagitani M.; Taguchi M.; Kikuchi M.; Kameda S.; Nakamura M.
刊名: Geophysical Research Letters
ISSN: 0094-9351
EISSN: 1944-9082
出版年: 2013
卷: 40, 期:2
起始页码: 250
结束页码: 254
语种: 英语
Scopus关键词: Dipole magnetic fields ; Extreme Ultraviolet ; Filament structure ; Geomagnetic activities ; Global distribution ; Magnetic flux tube ; Magnetic local time ; Sequential images ; Geomagnetism ; Magnetosphere ; Tubes (components) ; geomagnetic field ; lunar crust ; magnetic field ; plasma
英文摘要: The Telescope of Extreme Ultraviolet (TEX) onboard Japan's lunar orbiter KAGUYA provided the first sequential images of the Earth's plasmasphere from the "side" (meridian) view. The TEX instrument obtained the global distribution of the terrestrial helium ions (He+) by detecting resonantly scattered emission at 30.4 nm. One of the most striking features of the plasmasphere found by TEX is an arc-shaped structure of enhanced brightness, which we call a "plasmaspheric filament". In the TEX image on 2 June 2008, the filament structure was clearly aligned to the dipole magnetic field line of L = 3.7 at 7.3 magnetic local time. Our analysis suggests that the filament represents an isolated flux tube filled with four times higher He + density than its neighbors. We found four events of plasmaspheric filament in the images obtained between March and June 2008, and in all four events, the geomagnetic activity was quite low. The plasmaspheric filament in the TEX image is the first evidence that a "finger" structure seen in the IMAGE-EUV image is the projection of an isolated flux tube. © 2013. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874876730&doi=10.1002%2fgrl.50124&partnerID=40&md5=b31488565eaa28d78ecd60e36d3b0d1a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6615
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作者单位: Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo, Sagamihara, Kanagawa 252-5210, Japan

Recommended Citation:
Murakami G.,Yoshikawa I.,Yoshioka K.,et al. Plasmaspheric filament: An isolated magnetic flux tube filled with dense plasmas[J]. Geophysical Research Letters,2013-01-01,40(2).
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