Results 21 to 30 of about 1,155 (215)
The Plasmasphere Boundary Layer [PDF]
Annales Geophysicae, 2004 As an inner magnetospheric phenomenon the plasmapause region is of interest for a number of reasons, one being the occurrence there of geophysically important interactions between the plasmas of the hot plasma sheet and of the cool plasmasphere. There
D. L. Carpenter, J. Lemaire, J. Lemaire
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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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Frontiers in Astronomy and Space Sciences, 2021 The plasmapause marks the limit of the plasmasphere and is characterized by a sudden change in plasma density. This can influence the other regions of the magnetosphere, including due to different waves circulating inside and outside the plasmasphere. In
V. Pierrard +8 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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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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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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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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Proposal for an ionosphere/plasmasphere monitoring system [PDF]
Annales Geophysicae, 1994 A space-based satellite system suited for long-term monitoring of the Earth's ionosphere/plasmasphere systems is proposed. The monitoring system consists of a network of radio beacon satellites capable of measuring the ionospheric and plasmaspheric ...
N. Jakowski, H.-D. Bettac
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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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Plasmapause formation at Saturn [PDF]
Journal of Geophysical Research: Space Physics, 2015 AbstractCassini observations during a rapid, high‐latitude, dawnside pass from Saturn's lobe to inner magnetosphere on 25 June 2009 provide strong evidence for the formation of a “plasmapause” at Saturn by Vasyliunas‐type nightside reconnection of previously mass‐loaded flux tubes.
M. F. Thomsen +5 more
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