Magnus F. Ivarsen, Yukinaga Miyashita, Jean-Pierre St-Maurice, Glenn C. Hussey, Brian Pitzel, Draven Galeschuk, Saif Marei, Richard B. Horne, Yoshiya Kasahara, Shoya Matsuda, Satoshi Kasahara, Kunihiro Keika, Yoshizumi Miyoshi, Kazuhiro Yamamoto, Atsuki Shinbori, Devin R. Huyghebaert, Ayako Matsuoka, Shoichiro Yokota, Fuminori Tsuchiya
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Characteristic E-Region Plasma Signature of Magnetospheric Wave-Particle Interactions
Plasma waves in the magnetosphere scatter electrons, causing them to precipitate into Earth’s atmosphere, imparting their temporal characteristics to diffuse auroras. In a case study of conjugate radar and satellite observations, we demonstrate a close and unprecedented association between enhanced electrostatic cyclotron harmonic wave activity in the magnetosphere and the appearance of meter-scale plasma turbulence a few seconds later in the lower ionosphere on nearby magnetic field lines. Such direct structuring of the ionosphere carries implications for our understanding of space weather. Published by the American Physical Society2025
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