Results 241 to 250 of about 5,320 (271)
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Journal of Geophysical Research: Space Physics, 1983
The possible smoothing effect that diffusion has on steep plasmapause density gradients is examined for diffusion estimated from (a) the Bohm diffusion coefficient and (b) scattering by observed electrostatic waves. For characteristic plasma temperatures and magnetic fields at an L = 4 plasmapause, the (equatorial) perpendicular Bohm diffusion ...
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The possible smoothing effect that diffusion has on steep plasmapause density gradients is examined for diffusion estimated from (a) the Bohm diffusion coefficient and (b) scattering by observed electrostatic waves. For characteristic plasma temperatures and magnetic fields at an L = 4 plasmapause, the (equatorial) perpendicular Bohm diffusion ...
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Advances in Space Research, 1996
Abstract Narrow-band plasmapause hiss around 5 kHz was often observed in the vicinity of the plasmapause invariant latitude by ISIS-1 and ISIS-2. Frequency-time spectra of the hiss are similar to those of ground narrow-band 5 kHz hiss observed at mid- and low-latitudes. Statistically, the occurrence rate of the narrow-band plasmapause hiss is maximum
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Abstract Narrow-band plasmapause hiss around 5 kHz was often observed in the vicinity of the plasmapause invariant latitude by ISIS-1 and ISIS-2. Frequency-time spectra of the hiss are similar to those of ground narrow-band 5 kHz hiss observed at mid- and low-latitudes. Statistically, the occurrence rate of the narrow-band plasmapause hiss is maximum
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Micropulsations and the plasmapause
Journal of Atmospheric and Terrestrial Physics, 1976Abstract Based upon observations from a series of OGO satellites and ground measurements, the properties and structure of plasmapause-associated irregularities and the ring current are summarized in the following terms in relation to geomagnetic pulsations: 1. (1) spatial structure and maintenance; 2.
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Journal of Geophysical Research: Space Physics, 2020
A comprehensive numerical raytracing study of whistler mode wave power with the inclusion of finite background electron and ion temperature is performed in order to investigate wave power distribution in relation to the plasmapause.
A. Maxworth +3 more
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A comprehensive numerical raytracing study of whistler mode wave power with the inclusion of finite background electron and ion temperature is performed in order to investigate wave power distribution in relation to the plasmapause.
A. Maxworth +3 more
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Epoch‐Based Model for Stormtime Plasmapause Location
Journal of Geophysical Research: Space Physics, 2019The output of a plasmapause test particle (PTP) code is used to formulate a new epoch‐based plasmapause model. The PTP simulation is run for an ensemble of 60 storms spanning 3 September 2012 to 28 September 2017 and having peak Dst of −60 nT or less ...
J. Goldstein, S. D. Pascuale, W. Kurth
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Interchange instability of the Earth's plasmapause
Journal of Geophysical Research: Space Physics, 1990We reexamine the stability of low‐frequency electrostatic waves with k·B = 0 at the plasmapause, using an extension of the procedure of Richmond (1973), an approach that is based on computing individual particle motions and includes the line‐tying effect of the ionosphere.
T. S. Huang, R. A. Wolf, T. W. Hill
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The Role of the Dynamic Plasmapause in Outer Radiation Belt Electron Flux Enhancement
Geophysical Research Letters, 2020The plasmasphere is a highly dynamic toroidal region of cold, dense plasma around Earth. Plasma waves exist both inside and outside this region and can contribute to the loss and acceleration of high energy outer radiation belt electrons.
M. Bruff +8 more
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Shocks, solitons and the plasmapause
Journal of Atmospheric and Terrestrial Physics, 1976Abstract According to existing magnetospheric models, the plasmapause is thought to be the intersection of the solar wind induced convective flow with the Earth's corotational flow ( Axford , 1969). This fluid model is intuitive and acceptable, at least for the first sight.
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Dayside pulsation events near the plasmapause
Planetary and Space Science, 1986Magnetic field observations of four dayside pulsation events detected near the equatorial plasmapause region on August 23, 24, September 30, and October 10, 1982 are examined. The wave characteristics and the magnetic components of the pulsation events obtained from DE-1 satellite data and ground data from Siple, Antarctica are described and compared ...
N.G. Lin +4 more
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Ducted whistler propagation outside the plasmapause
Journal of Geophysical Research: Space Physics, 1988A study has been made of the conditions under which lightning whistlers are observed after propagating along geomagnetic field aligned paths or “ducts” located outside the plasmapause. The study was based in part upon results previously obtained from Antarctic whistler recordings in 1963 and in part upon new data from 45 days of observations at Siple ...
D. L. Carpenter, D. M. Šulić
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