Results 181 to 190 of about 1,155 (215)

Evidence of MLT propagation of the plasmapause inferred from THEMIS data

Journal of Atmospheric and Solar-Terrestrial Physics, 2017
The cross-correlation analysis is applied to the comprehensive database of THEMIS plasmapause crossings (6840 LPP s) and both solar wind parameters and geo- magnetic indices (thereafter LPP indicators). We estimate MLTs of the plasma- pause formation and
Mario Bandic, Giuliana Verbanac, V Pierrard   +2 more
exaly   +2 more sources

Plasmaspheric plumes: CRRES observations of enhanced density beyond the plasmapause

Journal of Geophysical Research, 2004
CRRES plasma wave receiver density data were used to study the distribution and properties of dense plasmaspheric-like plasma observed outside the plasmapause.
Mark B Moldwin, H K Rassoul, R R Anderson   +2 more
exaly   +2 more sources

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The Plasmapause Formation

Physica Scripta, 1987
Convection velocities in the equatorial region of the magnetosphere have a large dawn-dusk asymmetry as well as a significant day-night asymmetry. The latter is the consequence of (i) day-night asymmetry of the ionospheric integrated conductivities and (ii) enhanced solar wind induced convection velocity in the midnight local time sector.
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Plasmapause diffusion

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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Micropulsations and the plasmapause

Journal of Atmospheric and Terrestrial Physics, 1976
Abstract 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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Observations of the plasmapause and diffuse aurora

Planetary and Space Science, 1976
Abstract Simultaneous auroral and whistler data from SANAE, Antarctica, show that the separation between the equatorward boundary of the diffuse aurora and the plasmapause lies between zero and 0.25 L . There is also some evidence to suggest that auroral precipitation occurs, at least partly, on closed field lines.
G.R. Linscott, M.W.J. Scourfield
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The plasmapause as a VLF wave guide

Journal of Geophysical Research, 1977
The properties of the plasmapause as a VLF wave guide are studied. The guidance that occurs is a form of gradient trapping of VLF wave energy. It is shown that guiding is possible at both the inner and outer edges of the plasmapause and that more efficient guiding occurs as the plasmapause gradients become stronger.
U. S. Inan, T. F. Bell
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Plasmapause signatures in the ionosphere and magnetosphere

Journal of Geophysical Research: Space Physics, 1978
Isis 2 observations of a variety of topside ionospheric ‘signatures’ of the plasmapause are compared with simultaneously acquired equatorial electron density profiles obtained by the whistler technique. The satellite data were acquired at ∼1400‐km altitude at dusk and dawn in the sunlit northern hemisphere summer ionosphere within ∼15° longitude of the
J. C. Foster, C. G. Park, L. H. Brace, J. R. Burrows, J. H. Hoffman, E. J. Maier, J. H. Whitteker   +6 more
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Shocks, solitons and the plasmapause

Journal of Atmospheric and Terrestrial Physics, 1976
Abstract 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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Excitation of the Plasmapause at Ultralow Frequencies

Physical Review Letters, 1973
Observational evidence and the theoretical interpretation indicate that magnetic disturbances exterior to the plasmasphere boundary (within the magnetosphere) can excite damped, sinusoidal oscillations, which can be inferred as a magnetohydrodynamic surface eigenmode, at the o infer the plasma density inside the plasmapause and the plasma density ...
L. J. Lanzerotti, H. Fukunishi, A. Hasegawa, Liu Chen   +3 more
openaire   +1 more source