Response of midlatitude D-region of the ionosphere on spe proton events
Heading:
| 1Gokov, AM, 2Tyrnov, OF 1V.N. Karazin National University of Kharkiv, Kharkiv, Ukraine 2V.N. Karazin Kharkiv National University, Kharkiv, Ukraine |
| Kosm. nauka tehnol. 2003, 9 ;(Supplement2):086-090 |
| https://doi.org/10.15407/knit2003.02s.086 |
| Publication Language: Russian |
Abstract: During the spe events, an experimentally observed increase in the electron concentration by more than 50–100% in the lower part of the midlatitude D region of the ionosphere (~ 70–80 km) for tens of minutes. The change in the ionization rate is estimated. On the basis of experimental data on changes in the electron concentration during periods of proton precipitation, the corresponding fluxes were estimated: 106–107 m – 2 s – 1, which are in good agreement with theoretical calculations.
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References:
1. Brjunelli B. E., Namgaladze A. A. Ionospheric physics, 528 p. (Nauka, Moscow, 1988) [in Russian].
2. Garmash K. P. Regulation of the inverse problem in the method of partial reflections. Vestn. Har'k. gosuniversiteta. Radiofizika i jelektronika, No. 355, 61—64 (1991) [in Russian].
3. Gokov A. M., Piven' L. A., Fedorenko Iu. P. Determination of the electron density of the ionospheric D-region according to amplitude measurements of partially reflected signals. Radiotekhnika, Is. 93, 108—111 (1990) [in Russian].
4. Danilov A. D. Popular Aeronomy, 230 p. (Gidrometeoizdat, Leningrad, 1989) [in Russian].
5. Knuth R., Wuerzberger I. Midlatitude ionospheric perturbations caused by high-energy particles. Geomagnetizm i Aeronomiia, 16 (4), 666—673 (1976) [in Russian].
6. Knuth R., Fedorova N. I. Coordinated international measurements of geophysical effects of solar activity in the upper atmosphere. IV - Energetic particle precipitation during a baylike disturbance of the midlatitude ionospheric D region. Geomagnetizm i Aeronomiia, 17 (5), 854—861 (1977) [in Russian].
7. Mitra A. P. Ionospheric Effects of Solar Flares, 370 p. (Mir, Moscow, 1977) [in Russian].
8. Chernogor L. F. Disturbance of the inhomogeneous structure in the lower ionosphere as a result of powerful radio emission. Izv. vuzov. Radiofizika, 28 (12), 17— 26 (1985) [in Russian].
https://doi.org//10.1007/BF01037452
9. Belrose J. S., Burke M. J. Study of the lower ionosphere using partial reflection. 1. Experimental technique and method of analysis. J. Geophys. Res., 69 (13), 2799— 2818 (1964).
https://doi.org//10.1029/JZ069i013p02799
10. Chernogor L. F., Garmash K. P., Rozumenko V. T. Flux parameters of energetic particles affecting the middle latitude lower ionosphere. Radio Physics and Radio Astronomy, 3 (2), 191 — 197 (1998).
11. Hargreaves J. K. The Solar-Terrestrial Environment, 420 p. (Cambridge Univ. Press, New York, 1992).
https://doi.org//10.1017/CBO9780511628924
12. Tyrnov O. F., Garmash K. P., Gokov A. M., et al. The radiophysical observatory for remote sounding of the ionosphere. Turkish J. of Physics, 18, 1260—1265 (1994).