On long-period variations of electron density in the ionospheric F2 region.
Abstract
The paper demonstrates that in the presence of external electric fields of specific magnitude, subsonic waves which propagate at small angles to the horizontal can effectively interact with the F-region of the ionosphere by modulating the conductivity of the ionospheric plasma and the subsequent redistribution of charges because of periodic polarization fields. If the angle between the external electric field and the horizontal component of the wave vector satisfies a condition of spatial resonance derived here, the amplitude of perturbation of electronic density exceeds the amplitude of the subsonic wave.
- Publication:
-
Geomagnetism and Aeronomy
- Pub Date:
- April 1980
- Bibcode:
- 1980Ge&Ae..20..271G
- Keywords:
-
- Auroral Zones;
- F Region;
- Ionospheric Disturbances;
- Nonuniform Plasmas;
- Plasma-Particle Interactions;
- Radio Transmission;
- Electric Fields;
- Infrasonic Frequencies;
- Radio Signals;
- Rarefied Plasmas;
- Wave Interaction;
- Wave Propagation;
- Earth Ionosphere:Electron Densities