EVALUATION TECHNIQUE FOR THE F2 LAYER CRITICAL FREQUENCY BY THE DIFFERENCE OF IONOSPHERE ALFVEN RESONANCE EIGENFREQUENCIES
Notice bibliographique
Résumé
The data processing of the Ionosphere Alfven Resonance (IAR) signals synchronously received in Antarctica (Ukrainian Antarctic Station) and in Russia near Irkutsk has been made. The IAR parameters are calculated for several years, their diurnal and seasonal characteristics and the cases of registration of resonances in the frequency band higher than 10 Hz analyzed. The data are mapped with the ionosphere sounding results. The relation between IAR parameters and characteristics of the near-Earth plasma above the stations of observation is confirmed. The technique of the F2 layer critical frequency evaluation by the value of the average frequency spacing between neighboring modes of the Alfven resonance is developed within a simple phenomenological model of IAR. The technique is verified by the data of both stations and allows evaluating critical frequencies above any point on the Earth surface, where monitoring of IAR is performed. Key words : ionospheric Alfven resonator, critical frequency Manuscript submitted 26.03.2014 Radio phys. radio astron. 2014, 19(2): 151-159 REFERENCES 1. POLYAKOV, S. V. AND RAPOPORT, V. O., 1981. Ionospheric Alfven resonator. Geomagnetism and aeronomy . vol. 21, no. 5, pp. 816–822 (in Russian). 2. B ELYAEV, P. P., POLYAKOV, S. V., RAPOPORT, V. O., and TRAKHTENGERTS , V. Yu., 1989. Theory of the formation of the resonant structure of the spectrum of the atmospheric electromagnetic noise background in the range of short-period geomagnetic pulsations. Izvestiya Vuzov. Radiophysics . vol. 32, no. 7, pp. 802–810 (in Russian). 3. BELYAEV, P. P., POLYAKOV, S. V., RAPOPORT, V. O., and TRAKHTENGERTS , V. Yu., 1989. Experimental Investigation of the Resonance Structure of the Spectrum of the Atmospheric Electromagnetic Noise Background in the Range of Short-Period Geomagnetic Pulsations. Izvestiya Vuzov. Radiophysics . vol. 32, no. 6, pp. 663–672 (in Russian). 4. 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V., MANNINEN, J., TURUNEN, T., AND KANGAS , J., 2000. Modelling the diurnal evolution of the resonance spectral structure of the atmospheric noise background in the Pc 1 frequency range. J. Atmos. Solar-Terr. Phys . vol. 62, no. 4, pp. 257–265. DOI: https://doi.org/10.1016/S1364-6826(99)00119-4 18. JAYACHANDRAN, B., KRISHNANKUTTY, T. N., and GULYAEVA, T. L., 2004. Climatology of ionospheric slab thickness. ANGEO . vol. 22, no.1, pp. 25–33. DOI: https://doi.org/10.5194/angeo-22-25-2004
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