Magnetized Rossby waves in mid-latitude ionosphere F-layer
Abstract
We present the results of study of the ionosphere quasi-periodic perturbations on the basis of the analysis of the critical f0F2 frequency variations. The temporal scales of the perturbations are about 7 days and relative amplitude of the f0F2 perturbations are up to 40% of the averaged electron density value. It is assumed from the temporal scale and position that the critical f0F2 frequency variations are caused by Rossby wave-like disturbances with magnetic field influence on the ions. We studied the spatial and temporal scales of the waves at the F-layer altitudes on the basis of the mid-latitude ionosonde network measurements (Millstone Hill, Dyess, and Point Arguello stations data). The generalized Charney-Obukhov equation is proposed to describe the dynamics of the perturbations. We present the numerical model based on the full reduction algorithm for numerical solution of the dynamics equation.
- Publication:
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Advances in Astronomy and Space Physics
- Pub Date:
- March 2012
- Bibcode:
- 2012AASP....2...95S
- Keywords:
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- plasma waves and instabilities;
- ionospheric disturbances;
- wave propagation