EGU24-16339, updated on 09 Mar 2024
https://doi.org/10.5194/egusphere-egu24-16339
EGU General Assembly 2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

A Radial Standing Pc5-6 Wave and Its Energy Coupling With Field Line Resonance Within the Dusk-Sector Magnetosphere

Zhou Yi-Jia1,2, He Fei1,2, Zhang Xiao-Xin3, Martin Archer4, Lin Yu5, Ma Han1,2, Tian An-Min6, Yao Zhong-Hua1,2, Wei Yong1,2, Ni Binbin7, Liu Wenlong8, Zong Qiu-Gang9, and Pu Zu-Yin9
Zhou Yi-Jia et al.
  • 1Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China (zhouyj@mail.iggcas.ac.cn))
  • 2College of Earth and Planetary Science, University of Chinese Academy of Sciences, Beijing, China
  • 3Key Laboratory of Space Weather, National Center for Space Weather, China Meteorological Administration, Beijing, China
  • 4Space and Atmospheric Physics Group, Department of Physics, Imperial College London, London, UK
  • 5Physics Department, Auburn University, Auburn, AL, USA
  • 6School of Space Science and Physics, Shandong University, Weihai, China
  • 7Department of Space Physics, School of Electronic Information, Wuhan University, Wuhan, China
  • 8School of Space and Environment, Beihang University, Beijing, China
  • 9Institute of Space Physics and Applied Technology, Peking University, Beijing, China
Global ultra-low frequency (ULF) oscillations are believed to play a significant role in the mass,
energy, and momentum transport within the Earth's magnetosphere. In this letter, we observe a ∼1.2 mHz
radial standing wave in the dusk-sector magnetosphere accompanied by the field line resonance (FLR) on 16
July 2017. The frequency estimation from the simple box model also confirms the radial standing wave. The
essential characteristics of FLR are concurrently identified at the dusk-sector magnetosphere and the conjugated
ground location. Further, the radial standing wave dissipates energy into upper atmosphere to enhance the
local aurora by coupling itself to the FLR. The magnetospheric dominant 1.2/1.1 mHz ULF waves plausibly
correspond well with the discrete ∼1 mHz magnetosheath ion dynamic pressure/velocity oscillation, suggesting
this radial standing wave and FLR in the flank magnetosphere may be triggered by the solar-wind and/or
magnetosheath dynamic pressure/velocity fluctuations.

How to cite: Yi-Jia, Z., Fei, H., Xiao-Xin, Z., Archer, M., Yu, L., Han, M., An-Min, T., Zhong-Hua, Y., Yong, W., Binbin, N., Wenlong, L., Qiu-Gang, Z., and Zu-Yin, P.: A Radial Standing Pc5-6 Wave and Its Energy Coupling With Field Line Resonance Within the Dusk-Sector Magnetosphere, EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-16339, https://doi.org/10.5194/egusphere-egu24-16339, 2024.