volume | PIER Journals

Abstract

Statistical characteristics of scattered electromagnetic waves in the turbulent magnetized plasma caused by electron density fluctuations are calculated using complex geometrical optics approximation taking into account both diffraction effects and polarization coefficients. Scintillation level normalized on the variance of the phase fluctuations is analyzed analytically and numerically for small-scale plasma irregularities using the experimental data. New properties of the electromagnetic wave scintillations have been revealed. It is shown that splashes arise in the ionosphere leading to the turbulence and generation of new oscillations (waves and/or Pc pulsations) propagating in space and the terrestrial atmosphere. Turbulence extending in the lower atmospheric layers can influence on the meteorological parameters leading to climate change.

1. Wernik, A. W., J. A. Secan, and E. J. Fremouw, "Ionospheric irregularities and scintillation," Advances Space Research, Vol. 31, No. 4, 971-981, 2003.
doi:10.1016/S0273-1177(02)00795-0

2. Xu, Z.-W., W. Jian, and Z.-S. Wu, "A survey of ionospheric effects on space-based radar," Waves in Random Media, Vol. 14, 189-273, 2004.
doi:10.1088/0959-7174/14/2/008

3. Aarons, J., "Global morphology of ionospheric scintillation," Proc. IEEE, Vol. 70, 360-378, 1982.
doi:10.1109/PROC.1982.12314

4. Jandieri, G. V., A. Ishimaru, V. G. Jandieri, A. G. Khantadze, and Z. M. Diasamidze, "Model computations of angular power spectra for absorptive turbulent magnetized plasma," Progress In Electromagnetic Research, Vol. 70, 307-328, 2007.
doi:10.2528/PIER07013103

5. Jandieri, G. V., Z. M. Diasamidze, and M. R. Diasamidze, "Scintillation spectra of scattered electromagnetic waves in turbulent magnetized plasma," Journal of Basic and Applied Physics, Vol. 2, No. 4, 224-234, 2013.

6. Jandieri, G., A. Ishimaru, B. Rawat, O. Kharshiladze, and Z. Diasamidze, "Power spectra of ionospheric scintillation," Advanced Electromagnetics, Vol. 6, 42-51, 2017.
doi:10.7716/aem.v6i4.652

7. Jandieri, G., A. Ishimaru, B. Rawat, V. G. Gavrilenko, and O. Kharshiladze, "Statistical moments and scintillation level of scattered electromagnetic waves in the magnetized plasma," Progress In Electromagnetic Research C, Vol. 84, 11-22, 2018.
doi:10.2528/PIERC18030602

8. Ginzburg, V. L., Propagation of Electromagnetic Waves in Plasma, Gordon and Beach, New York, 1961.

9. Xu, Z.-W., J. Wu, and Z.-S. Wu, "A survey of ionospheric effects on space-based radar," Waves in Random Media, Vol. 14, No. 2, 189-273, 2004.
doi:10.1088/0959-7174/14/2/008

10. Jandieri, G. V. and A. Ishimaru, "Some peculiarities of the spatial power spectrum of scattered electromagnetic waves in randomly inhomogeneous magnetized plasma with electron density and external magnetic field fluctuations," Progress In Electromagnetic Research B, Vol. 50, 77-95, 2013.
doi:10.2528/PIERB13013002

11. Jandieri, G. V., "``Double-humped effect'' in the turbulent collision magnetized plasma," Progress In Electromagnetic Research M, Vol. 48, 95-102, 2016.
doi:10.2528/PIERM16031203

12. Jandieri, G. V., A. Ishimaru, B. Rawat, and N. K. Tugushi, "Peculiarities of the spatial power spectrum of scattered electromagnetic waves in the turbulent collision magnetized plasma," Progress In Electromagnetics Research, Vol. 152, 137-149, 2015.
doi:10.2528/PIER15081802

13. Rufenach, C. L., "Ionospheric scintillation by a random phase screen: Spectral approach," Radio Science, Vol. 10, No. 2, 155-165, 1975.
doi:10.1029/RS010i002p00155

14. Rufenach, C. L., "Power-law wavenumber spectrum deduced from ionospheric scintillation observations," Journal of Geophysical Research, Vol. 77, 4761-4772, 1972.
doi:10.1029/JA077i025p04761

15. MacDougall, J. W., "Distribution of the irregularities which produce ionospheric scintillations," J. Atmospheric and Terrestrial Physics, Vol. 43, No. 4, 317-325, 1981.
doi:10.1016/0021-9169(81)90093-3

16. Patra, A. K. and D. V. Phanikumar, "Intriguing aspects of F-region plasma irregularities revealed by the Gadanki radar observations during the SAFAR campaign," Ann. Geophys., Vol. 27, 3781-3790, 2009.
doi:10.5194/angeo-27-3781-2009

17. Jandieri, G. V., A. Ishimaru, V. G. Jandieri, A. G. Khantadze, and Z. M. Diasamidze, "Model computations of angular power spectra for anisotropic absorptive turbulent magnetized plasma," Progress In Electromagnetics Research, Vol. 70, 307-328, 2007.
doi:10.2528/PIER07013103

18. Burke, M. J., "Validity of three-station methods of determining ionospheric motions," Journal of Atmospheric and Terrestrial Physics, Vol. 38, 553-559, 1976.
doi:10.1016/0021-9169(76)90014-3

Prof. George Jandieri

Dr. Akira Ishimaru

Professor Jaromir Pistora

Dr. Michal Lesnak