The Roles of the Magnetopause and Plasmapause in Storm‐Time ULF Wave Power Enhancements

Ultra low frequency (ULF) waves play a crucial role in transporting and coupling energy within the magnetosphere. During geomagnetic storms, dayside magnetospheric ULF wave power is highly variable with strong enhancements that are dominated by elevated solar wind driving. However, the radial distri...

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Bibliographic Details
Published in:Journal of geophysical research. Space physics 2021-07, Vol.126 (7), p.n/a
Main Authors: Sandhu, J. K., Rae, I. J., Staples, F. A., Hartley, D. P., Walach, M.‐T., Elsden, T., Murphy, K. R.
Format: Article
Language:English
Subjects:
Aerospace environments
Charged particles
Cold plasmas
Cold storage
Density distribution
Diffusion coefficient
Earth
Electric power distribution
Empirical analysis
Empirical models
Extremely low frequencies
Geomagnetic field
Geomagnetic storms
Geomagnetism
inner magnetosphere
Magnetic fields
Magnetic storms
Magnetism
Magnetopause
Magnetospheres
Magnetospheric-solar wind relationships
Parameterization
Plasma
Plasma density
Plasmapause
plasmasphere
radial diffusion
Radial distribution
Solar wind
Spacecraft
Statistical analysis
Storms
ULF waves
Van Allen Probes
Wave power
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Summary:Ultra low frequency (ULF) waves play a crucial role in transporting and coupling energy within the magnetosphere. During geomagnetic storms, dayside magnetospheric ULF wave power is highly variable with strong enhancements that are dominated by elevated solar wind driving. However, the radial distribution of ULF wave power is complex ‐ controlled interdependently by external solar wind driving and the internal magnetospheric structuring. We conducted a statistical analysis of observed storm‐time ULF wave power from the Van Allen Probes spacecraft within 2012–2016. Focusing on the dayside (06 
ISSN:2169-9380
2169-9402
DOI:10.1029/2021JA029337