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A radial standing Pc5-6 wave and its energy coupling with field line resonance within the dusk-sector magnetosphere

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Title: A radial standing Pc5-6 wave and its energy coupling with field line resonance within the dusk-sector magnetosphere
Authors: Zhou, Y-J
He, F
Zhang, X-X
Archer, MO
Lin, Y
Ma, H
Tian, A-M
Yao, Z-H
Wei, Y
Ni, B
Liu, W
Zong, Q-G
Pu, Z-Y
Item Type: Journal Article
Abstract: 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.
Issue Date: Oct-2023
Date of Acceptance: 21-Sep-2023
URI: http://hdl.handle.net/10044/1/107826
DOI: 10.1029/2023JA031835
ISSN: 2169-9402
Publisher: American Geophysical Union
Journal / Book Title: JGR: Space Physics
Volume: 128
Issue: 10
Copyright Statement: © 2023. American Geophysical Union. All Rights Reserved. An edited version of this paper was published by AGU. Published 2023 American Geophysical Union. Zhou, Y.-J., He, F., Zhang, X.-X., Archer, M. O., Lin, Y., Ma, H., et al. (2023). A radial standing Pc5-6 wave and its energy coupling with field line resonance within the dusk-sector magnetosphere. Journal of Geophysical Research: Space Physics, 128, e2023JA031835. https://doi.org/10.1029/2023JA031835
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
UKRI
Funder's Grant Number: EP/T01735X/1
EP/T01735X/1
Keywords: Science & Technology
Physical Sciences
Astronomy & Astrophysics
ultra-low frequency (ULF) wave
standing wave
field line resonance (FLR)
Magnetosheath Fluctuation
PERIOD MAGNETIC PULSATIONS
ULF PULSATIONS
EXCITATION
OSCILLATIONS
MAGNETOPAUSE
DRIVEN
CAVITY
MODES
INSTABILITY
INSTRUMENT
Astronomy & Astrophysics
CAVITY
DRIVEN
EXCITATION
field line resonance (FLR)
INSTABILITY
INSTRUMENT
MAGNETOPAUSE
Magnetosheath Fluctuation
MODES
OSCILLATIONS
PERIOD MAGNETIC PULSATIONS
Physical Sciences
Science & Technology
standing wave
ULF PULSATIONS
ultra-low frequency (ULF) wave
0201 Astronomical and Space Sciences
0401 Atmospheric Sciences
Publication Status: Published
Article Number: e2023JA031835
Online Publication Date: 2023-09-28
Appears in Collections:Space and Atmospheric Physics
Physics