日本地球惑星科学連合2024年大会

講演情報

[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-EM10] Dynamics of Magnetosphere and Ionosphere

2024年5月27日(月) 17:15 〜 18:45 ポスター会場 (幕張メッセ国際展示場 6ホール)

コンビーナ:今城 峻(京都大学大学院理学研究科附属地磁気世界資料解析センター)、家田 章正(名古屋大学 宇宙地球環境研究所)、佐藤 由佳(日本工業大学)、藤本 晶子(九州工業大学)

17:15 〜 18:45

[PEM10-P11] Wave observations at lunar orbit in the magnetotail and the solar wind

*Kaiti Wang1、Shih-Lun Chao1、Zhan-Rong Hsu1,2、Ya-Hui Yang2 (1.Tamkang University、2.National Central Univeristy)

キーワード:magnetotail , solar wind , whistler-mode waves, ARTEMIS mission, lunar orbit

An analysis is conducted on the wave observations by the two probes orbiting the moon of the ARTEMIS (Acceleration, Reconnection, Turbulence and Electrodynamics of Moon's Interaction with the Sun) mission. The wave features in the magnetotail and the solar wind are compared. This is accomplished by analyzing the observational data about lunar day 15 and lunar day 1, respectively, over a period of ten years by utilizing the high-resolution FFF wave spectral data and with the aid of measurements from the search coil magnetometer. The frequency range of waves exhibits a broader range at the tailside, whereas it is predominantly confined to a few Hz at the solar wind. Patterns of these waves in f-t spectrograms also exhibit a greater range of variations at the tailside. Many waves are found to be in the frequency range of whistler mode. We will explore and discuss how the characteristics of observed waves are associated with plasma properties in the environment, as well as the influence of solar proton events on these waves.