[P-EM19] Dynamics of the Inner Magnetospheric System

[PEM19-18] Highly O⁺-Rich Plasmasphere at L ~ 2.5 During Severe Geomagnetic Storms in 2024

*Yuki Obana¹, Naritoshi Kitamura², Atsuki Shinbori², Kazuhiro Yamamoto², John Malone-Leigh³, Craig J Rodger³, Tanja Petersen⁴, Chae-Woo Jun², Tomoaki Hori², Yoshizumi Miyoshi², Yuichi Otsuka², Atsushi Kumamoto⁵, Fuminori Tsuchiya⁶, Yoshiya Kasahara⁷, Mariko Teramoto⁸, Ayako Matsuoka⁹, Yoichi Kazama¹⁰, Shiang-Yu Wang¹⁰, Sunny W. Y. Tam¹¹, Tzu-Fang Chang¹¹, Bo-Jhou Wang¹⁰, Kazushi Asamura¹², Iku Shinohara¹², Shoichiro Yokota¹³, Kunihiro Keika¹⁴, Satoshi Kasahara¹⁴, Marc Hairston¹⁵, Septi Perwitasari¹⁶, Michi Nishioka¹⁶ (1. International Research Center for Space and Planetary Environmental Science, Kyushu University, 2. Institute for Space-Earth Environmental Research, Nagoya University, 3. TheUniversity of Otago, 4. Earth Sciences New Zealand, 5. Department of Geophysics, Graduate School of Science, Tohoku University, 6. Planetary Plasma and Atmospheric Research Center, Graduate School of Science, Tohoku University, 7. Kanazawa University, 8. Kyushu Institute of Technolog, 9. Data Analysis Center for Geomagnetism and Space Magnetism, Graduate School of Science, Kyoto University, 10. Academia Sinica, Institute of Astronomy and Astrophysics, 11. Institute of Space and Plasma Sciences, National Cheng Kung University, 12. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 13. Graduate School of Science, Osaka University, 14. Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 15. The University of Texas at Dallas, 16. National Institute of Information and Communications Technology)

Keywords:inner magnetosphere, plasmasphere, oxygen torus, Mothers'day storm, Gannon storm