タイトル | SC-triggered plasma waves observed by the Akebono satellite in the polar regions and the plasmasphere |
その他のタイトル | 極域とプラズマ圏におけるあけぼの衛星観測によるSC誘発プラズマ波 |
著者(日) | 新堀 淳樹; 小野 高幸; 大家 寛 |
著者(英) | Shinbori, Atsuki; Ono, Takayuki; Oya, Hiroshi |
著者所属(日) | 東北大学 大学院理学研究科; 東北大学 大学院理学研究科; 福井工業大学 |
著者所属(英) | Tohoku University Graduate School of Science; Tohoku University Graduate School of Science; Fukui University of Technology |
発行日 | 2002-09 |
刊行物名 | Advances in Polar Upper Atmosphere Research Advances in Polar Upper Atmosphere Research |
号 | 16 |
開始ページ | 126 |
終了ページ | 135 |
刊行年月日 | 2002-09 |
言語 | eng |
抄録 | Plasma wave phenomena associated with sudden commencements (SCs) were analyzed based on observations conducted with the Akebono satellite, which has been collecting data for more than 13 years (since March 1989). Simultaneous plasma wave observation data for 257 SCs reveal that enhanced plasma waves are observed with an exact one-to-one correspondence with the SCs throughout the entire observation region, including the polar and plasmasphere regions. Electromagnetic whistler mode and ion cyclotron waves are enhanced in the low latitude plasmasphere, while electrostatic whistler mode and electromagnetic ion cyclotron waves are generated in the polar region. The onset times of he SC-triggered plasma waves exhibit a delay or lead time characteristic, compared with the onset times of SCs identified by the Kakioka Magnetic Observatory, with a time resolution of 1 s. By comparing the difference in SCs and enhanced electron plasma waves onset times, the propagation route of the SC disturbances can be identified in the plasmasphere. |
キーワード | plasma wave; sudden commencement; plasmasphere; satellite observation; Akebono satellite; polar region; electromagnetic whistler; ion cyclotron wave; Earth magnetosphere; magnetic storm; プラズマ波; 急始; プラズマ圏; 衛星観測; あけぼの衛星; 極域; 電磁ホイスラ; イオンサイクロトロン波; 地球磁気圏; 磁気嵐 |
資料種別 | Technical Report |
ISSN | 1345-1065 |
SHI-NO | AA0045079009 |
URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/35607 |