Development of Super Plasma Bubbles During the 7 September 2017 Geomagnetic Storm Revealed by Coupled GITM-SAMI3 Simulations

Zihan Wang; Shasha Zou; Joseph D Huba; Aaron J Ridley

講演情報

[E] 口頭発表

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-EM12] Coupling Processes in the Atmosphere-Ionosphere System

2025年5月25日(日) 10:45 〜 12:15 303 (幕張メッセ国際会議場)

コンビーナ:細川敬祐(電気通信大学大学院情報理工学研究科)、Liu Huixin(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)、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)、座長:坂野井健(東北大学大学院理学研究科惑星プラズマ・大気研究センター)、Elvira Astafyeva(Institut de physique du Globe de Paris)

11:00 〜 11:15

[PEM12-02] Development of Super Plasma Bubbles During the 7 September 2017 Geomagnetic Storm Revealed by Coupled GITM-SAMI3 Simulations

*Zihan Wang¹、Shasha Zou²、Joseph D Huba³、Aaron J Ridley² (1.University of Texas at Arlington、2.University of Michigan、3.Syntek Technologies)

キーワード：Equatorial Plasma Bubble, Penetration Electric Fields, Geomagnetic Storm, Super Equatorial Plasma Bubble

In this study, we used the coupled GITM (Global Ionosphere Thermosphere Model)-SAMI3 (Sami3 is Also a Model of the Ionosphere) model to simulate the response of the ionosphere-thermosphere system during the 7 September 2017 geomagnetic storm. In the simulation results, a super equatorial plasma bubble (SEPB) formed and rose to around 40° magnetic latitude (MLAT). This is attributed to a penetration electric field (PEF) that enhances the growth rate of generalized Rayleigh-Taylor instability (GRTI), while traveling atmospheric/ionospheric disturbances act as a seeding mechanism.