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The Topside Ionosphere: A Region of Dynamic Transition
Annual Review of Earth and Planetary Sciences, 1976The review article concentrates on dynamic processes at work in the topside ionosphere (between the F2 peak and about 3000 km) where the H ion dominates and ionic reactions can be neglected. The history of ionosphere and plasmasphere research using radio waves is reviewed.
P M Banks, R W Schunk, W J Raitt
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Cusp Dynamics and Ionospheric Outflow
Space Science Reviews, 2003One of the IMAGE mission science goals is to understand the dayside auroral oval and its dynamic relationship to the magnetosphere. Two ways the auroral oval is dynamically coupled to the magnetosphere are through the injection of magnetosheath plasma into the magnetospheric cusps and through the ejection of ionospheric plasma into the magnetosphere ...
S.A. Fuselier +6 more
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Ion Dynamics in the Venus Ionosphere
Space Science Reviews, 1991Dynamics play an important role in defining the characteristics of the Venus ionosphere. The absence of a significant internal magnetic field at Venus allows the ionization to respond freely to gradients in the plasma pressure. The primary response to a gradient in plasma pressure is the nightward flow of the ionization away from a photoionization ...
K.L. Miller, R.C. Whitten
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Vertical Motions in the Lower Ionosphere and Dynamics of the Ionospheric Plasma
2019 Russian Open Conference on Radio Wave Propagation (RWP), 2019This paper presents results of a measurement of the vertical plasma motion velocity in the lower ionosphere by the method of the resonant scattering of radio waves on artificial periodic irregularities created by powerful HF radio emission of the SURA heating facility.
Natalia Bakhmet'eva +4 more
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A dynamical effect in the ionospheric f1 layer
Planetary and Space Science, 1978Abstract Incoherent scatter observations of the ionospheric F1 layer above Saint-Santin (44.6°N) are analyzed after correction of a systematic error at 165 and 180 km altitude. The daytime valley observed around 200 km during summer for low solar activity conditions is explained in terms of a downward ionization drift which reaches −30 m s−1 around ...
Taieb, C., Scialom, G., Kockarts, G.
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2023
The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Rolland, L., Team, I.
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The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Rolland, L., Team, I.
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Dynamic boundaries of the ionosphere variability
Advances in Space Research, 2001Abstract It has been shown that the conventional threshold of ±20% departures from monthly median cannot serve for reliably distinguishing quiet and disturbed ionospheric conditions at different latitudes/time-of-day/season/level of solar activity. After a 3 h filtering of daily-hourly foF2 critical frequency, for each 3 h UT bin new upper and lower ...
T.L. Gulyaeva, K.K. Mahajan
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Effects of the Ionospheric Conductance on the Dynamics of the Magnetotail
Journal of Geophysical Research: Space Physics, 2023AbstractWe have carried out a series of numerical experiments designed to evaluate the sensitivity of global magnetohydrodynamic simulations to changes in ionospheric conductance. We multiplied the precipitating energy fluxes due to both strong pitch angle scattering and parallel currents by constant factors in the Robinson et al.
Mostafa El‐Alaoui +2 more
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The dynamic ionospheric polar hole
Radio Science, 1993At a time when most polar cap ionospheric studies are focused on electron density enhancements caused by patches or arcs, this paper discusses an F region depletion known as the ionospheric polar hole. Statistically, polar holes tend to develop on the nightside from 2100–0600 MLT between 70°–80°Λ.
G. Crowley +5 more
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