Effect of the geomagnetic field on the amplitude increase of wave motions at Re/M/ much less than unity
Abstract
Wave motions in the ionosphere are studied on the basis of an MHD description of the ionospheric gas in the inductionless approximation, where Re(M) is much less than unity. Expressions are obtained for frequencies of internal acoustic and gravity waves, as well as for those of Rossby waves. The effect of inductive resistance is determined to be one of wave attenuation during vertical propagation. Those critical values of the inductive resistance are determined at which the amplitude increase of waves, caused by gravitation, is compensated.
- Publication:
-
Bulgarsko Geofizichno Spisanie
- Pub Date:
- 1978
- Bibcode:
- 1978BlGSp...4...46P
- Keywords:
-
- Geomagnetism;
- Gravity Waves;
- Ionospheric Propagation;
- Magnetic Effects;
- Magnetohydrodynamic Waves;
- Wave Propagation;
- Geomagnetic Latitude;
- Gravitational Waves;
- Internal Waves;
- Magnetic Induction;
- Reynolds Number;
- Rossby Regimes;
- Sound Waves;
- Geophysics