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北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University >
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Title: 極域電離圏上部におけるイオン上昇流の観測
Other Titles: Ion upflow observed in the polar ionosphere
Authors: 佐藤, 創我1 Browse this author
LIU, Huixin2 Browse this author
渡部, 重十3 Browse this author
小川, 泰信4 Browse this author
Authors(alt): SATO, Soga1
LIU, Huixin2
WATANABE, Shigeto3
OGAWA, Yasunobu4
Issue Date: 15-Mar-2007
Publisher: 北海道大学大学院理学研究院自然史科学部門(地球物理学)
Journal Title: 北海道大学地球物理学研究報告
Journal Title(alt): Geophysical bulletin of Hokkaido University
Volume: 70
Start Page: 13
End Page: 25
Abstract: Ion upflow has been investigated by use of ESR (EISCAT Svalbard Radar), SuperDARN, ACE satellite and CHAMP satellite. The field-aligned ion upflows were observed by ESR, which occurred in night-time between 16 and 17, April 2002, and 19 June 2004. However, ESR didn’t show remarkable increase of electron density, electron temperature and ion temperature, which are generated by auroral particle precipitation or frictional heating. The Solar wind parameters were obtained by ACE satellite. SuperDARN showed variation of convection electric field depending on By component of Interplanetary Magnetic Field. CHAMP satellite observed also variations of neutral density, neutral wind, ion density and electron temperature along the satellite orbits. At the time, ESR was in the polar cap region. Our analyses may suggest that the ion upflow observed by ESR was generated in the upwind region of plasma convection in the high-latitude ionosphere and was moving to ESR station by the convection.
Type: bulletin (article)
Appears in Collections:北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University > 第70号

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