Results 171 to 180 of about 1,626 (204)

Ples model in the plasmapause diagnostics

Advances in Space Research, 2002
Abstract Code PLES instantaneous mapping of ionospheric characteristics though intended for operational use in telecommunication systems appears to be a useful tool in plasmapause diagnostics. PLES allows construction of retrospective maps for specific epochs.
I. Stanislawska, H. Rothkaehl
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Narrow-band plasmapause hiss

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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Theoretical comments on the nature of the plasmapause

Advances in Space Research, 1986
The traditional theoretical interpretations of the observed plasmapause are compared, namely, the plasmapause as: (1) The boundary between closed flux tubes that have been in the inner magnetosphere for several days and those that have recently drifted in from the magnetotail or (2) the last closed electric equipotential.
R.A. Wolf, G.A. Mantjoukis, R.W. Spiro
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Dynamical simulations of the plasmapause and the plasmasphere

2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), 2017
Plasmapause and plasmasphere simulations have been developed at BIRA-IASB to better understand the physical mechanisms implicated in this region of the inner magnetosphere. The simulations include convection and co-rotation and can also take into account the interchange mechanism for the formation of the plasmapause.
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Ballooning mode instability at the plasmapause

Journal of Geophysical Research: Space Physics, 1990
The ballooning mode instability, which can excite hydromagnetic waves at the plasmapause, is studied in the presence of azimuthal plasma flows induced during geomagnetically disturbed periods. A general sufficient criterion for the ballooning mode stability is derived as δW ≥ 0 (where δW represents the change in the potential energy) which involves the
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Interchange instability of the Earth's plasmapause

Journal of Geophysical Research: Space Physics, 1990
We 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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Recent Research on the Magnetospheric Plasmapause

Radio Science, 1968
The plasmapause is a three‐dimensional field aligned boundary that divides the closed field‐line portion of the earth's magnetosphere into two physically distinct regions. The boundary is asymmetric, usually exhibiting a minimum geocentric range near dawn and a maximum near dusk under conditions of moderate but steady geomagnetic agitation (Kp = 2 − 4).
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The ‘Roche-Limit’ of ionospheric plasma and the formation of the plasmapause

Planetary and Space Science, 1974
Abstract The plasmapause position is determined by the innermost equipotential surface which is tangent to the ‘Roche-Limit’ surface of the ionospheric plasma filling the magnetosphere. When the thermal particles corotate with the Earth's angular velocity, the ‘Roche-Limit’ equatorial distance is L c =5.78 [ R E ].
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Plasmapause effects in the top side ionosphere

Journal of Geophysical Research, 1976
Values of plasma temperature and O+/H+ ion transition height, obtained from 60,000 Alouette 1 electron density profiles, are used to study changes associated with the plasmapause. An ionospheric plasmapause can be defined by (1) the latitude at which peak temperatures occur, (2) the latitude down to which the ion transition height remains high, showing
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Hydromagnetic stability of the plasmapause.

1970
Massachusetts Institute of Technology. Dept. of Earth and Planetary Sciences Thesis. 1970. Ph.D. ; Microfiche copy also available in Science Library. ; Vita. ; Bibliography: leaves 201-206. ; Ph.D.
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