Results 11 to 20 of about 2,907 (207)
Van Allen Probes Observations of Oxygen Ions at the Geospace Plume
Frontiers in Astronomy and Space Sciences, 2021 The geospace plume couples the ionosphere, plasmasphere, and magnetosphere from sub-auroral regions to the magnetopause, on polar field lines, and into the magnetotail.
John C. Foster, Philip J. Erickson
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Ionospheric and magnetospheric “plasmapauses” [PDF]
Planetary and Space Science, 1978 Abstract During August 1972, Explorer 45 orbiting near the equatorial plane with an apogee of ∼5.2 R e traversed magnetic field lines in close proximity to those simultaneously traversed by the topside ionospheric satellite ISIS 2 near dusk in the L range 2.0–5.4.
Joseph M. Grebowsky +2 more
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Modeling of the cold electron plasma density for radiation belt physics
Frontiers in Astronomy and Space Sciences, 2023 This review focusses strictly on existing plasma density models, including ionospheric source models, empirical density models, physics-based and machine-learning density models.
J.-F. Ripoll +12 more
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Sawtooth and dune auroras simultaneously driven by waves around the plasmapause
Earth and Planetary Physics, 2023 The dune aurora, at a scale of ~30 kilometers, was reported recently using ground camera. The small-scale dune aurora occurs on the duskside and exhibits a monochromatic oscillation in the auroral emission, implying fundamental energy conversions ...
Fei He +12 more
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A new perspective and explanation for the formation of plasmaspheric shoulder structures [PDF]
Annales Geophysicae, 2021 Over the hours of 05:00–09:00 UT on 8 June 2001, the extreme ultraviolet (EUV) instrument on board the IMAGE satellite observed a shoulder-like formation in the morning sector and a post-noon plume-like structure.
H. Zhang, G. Peng, C. Shen, Y. Wu
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Plasmapause Surface Waves Triggered by Substorms [PDF]
Journal of Geophysical Research: Space Physics, 2022 AbstractIn this study, we present in‐situ measurement on board Van Allen Probes showing that surface wave can cause oscillations of the plasmapause and modulate hiss and electron cyclotron harmonic (ECH) waves. Plasmapause surface wave (PSW) in Ps6 band was observed during an intense substorm on 16 July 2017, accompanied with quasi‐periodic emissions ...
Y. X. Hao +6 more
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On structuring of the plasmapause [PDF]
Geophysical Research Letters, 2012 Irregularities have been observed on the plasmapause by radio wave techniques and by in situ density, electric field, and magnetic field measurements. We review these data sets and show that Alfvén waves are present and could lead to the observed fluctuations through mixing of the gradient in plasma density at the plasmapause.
M. C. Kelley, J. Franz, A. Jacobson
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Formation of the oxygen torus in the inner magnetosphere: Van Allen Probes observations [PDF]
, 2015 We study the formation process of an oxygen torus during the 12–15 November 2012 magnetic storm, using the magnetic field and plasma wave data obtained by Van Allen Probes.
De Pascuale, S. +11 more
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Journal of Space Weather and Space Climate, 2014 The plasmapause is a highly dynamic boundary between different magnetospheric particle populations and convection regimes. Some of the most important space weather processes involve wave-particle interactions in this region, but wave properties may also ...
Menk Frederick +7 more
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Modulation of NTC frequencies by Pc5 ULF pulsations : experimental test of the generation mechanism and magnetoseismology of the emitting surface [PDF]
, 2009 Nonthermal continuum (NTC) radiation is believed to be emitted by the conversion of an electrostatic wave into an electromagnetic one, which takes place at the Earth's magnetic equator.
Anderson +43 more
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