IKBFU's Vestnik

2011 Issue №04

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Spectral characteristics of atmospheric disturbances at middle latitudes during geomagnetic storms



The paper discusses the possibility of physical interpretation of the global ionosphere disturbances during geomagnetic storms, and after them, based on Poincare waves excited in the atmosphere under such conditions. The spectrum of the diurnal variations TEC perturbations were obtained for the midlatitude stations located in the European longitude sector. It is shown that in the spectrum of TEC variations are present harmonics with periods of the relevant standing planetary waves Poincare. Analysis of the latitudinal structure of amplitudes and periods of the harmonics shown a qualitative agreement with theoretical estimates for the Poincare waves.


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