日本地球惑星科学連合2022年大会

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[E] ポスター発表

セッション記号 P (宇宙惑星科学) » P-EM 太陽地球系科学・宇宙電磁気学・宇宙環境

[P-EM13] Coupling Processes in the Atmosphere-Ionosphere System

2022年6月1日(水) 11:00 〜 13:00 オンラインポスターZoom会場 (4) (Ch.04)

コンビーナ:Huixin Liu(九州大学理学研究院地球惑星科学専攻 九州大学宙空環境研究センター)、コンビーナ:大塚 雄一(名古屋大学宇宙地球環境研究所)、Chang Loren(Institute of Space Science, National Central University)、コンビーナ:Deng Yue(University of Texas at Arlington)、座長:大塚 雄一(名古屋大学宇宙地球環境研究所)、新堀 淳樹(名古屋大学宇宙地球環境研究所)


11:00 〜 13:00

[PEM13-P09] Multi-day oscillations in the equatorial ionosphere during the 2019 Antarctic sudden stratwarming: mixed response to forcing from above and below

*Huixin Liu1、Yuichi Otsuka2、K. Hozumi3、Masaru Kogure1、T. Yu4 (1.Earth and Planetary Science Division, Kyushu University SERC, Kyushu University, Japan、2.ISEE, Nagoya University, Japan、3.National Institute of Communication Technology, Japan、4.Wuhan university of geology, China)

キーワード：Equatorial Ionosphere, Stratosphere sudden warming, atmosphere-ionosphere coupling, magnetic storms

The equatorial ionosphere is sensitive to both solar/magnetic forcing from above and atmospheric wave forcing from below. In this study, we analyze the ionospheric variabilities in the Asian sector during August--October, 2019. In this period, a rare stratosphere sudden warming event occurred in the Antarctic in September, and the geomagnetic activity also increased periodically. We focus on the multi-day oscillations in the total electron content (TEC) and the equatorial electrojet (EEJ) observed in southeast Asia. By examining simultaneous meteor radar observations of mesospheric winds along with the Kp index and the interplanetary electric field, we explore the relative role of geomagnetic activity and lower atmosphere forcing in producing multi-day oscillations in the equatorial ionosphere.