[P-EM10] Dynamics of Magnetosphere and Ionosphere

[PEM10-22] Comparative study on chorus waves in March 2017 storm between the RAM-SCB/electron hybrid simulations, the Arase observations and the ground-based observations

*三好 由純¹、Jordanova Vania²、加藤 雄人³、齊藤 慎司⁴、栗田 怜⁵、松田 昇也¹⁰、笠原 禎也¹⁰、土屋 史紀³、熊本 篤志³、中村 紗都子¹、笠原 慧⁶、横田 勝一郎⁷、堀 智昭¹、桂華 邦裕⁶、風間 洋一⁸、Wang S-Y⁸、Jun Chae-Woo¹、三谷 烈史⁹、高島 健⁹、東尾 奈々⁹、松岡 彩子⁵、塩川 和夫¹ (1.名古屋大学宇宙地球環境研究所、2.ロスアラモス国立研究所、3.東北大学、4.情報通信研究機構、5.京都大学、6.東京大学、7.大阪大学、8.ASIAA、9.宇宙航空研究開発機構、10.金沢大学)

キーワード：あらせ衛星、シミュレーション、コーラス波動

We simulate the time evolution of the distribution function of electrons and plasmasphere using the RAM-SCB for the March 2017 storm. During the storm, the Arase satellite observed continuous chorus wave activity in the morning sector of the inner magnetosphere, and also identified the growing peak in electron phase space density, which is evidence of the internal acceleration [Miyoshi et al., 2021]. Using the simulated distribution function data, we calculate several physical parameters related to the wave generation: linear growth rate, non-linear optimum amplitude and threshold, the temperature anisotropy and the relative composition of the hot electrons [Katoh et al., 2018]. We compare the chorus wave activities from Arase and the ground with the simulated parameters to discuss how these parameters are related to the actual chorus dynamics.