Physics of auroral phenomena : proceedings of the 39th annual seminar, Apatity, 29 February-4 March, 2016 / [ed. board: N. V. Semenova, A. G. Yahnin]. - Апатиты : Издательство Кольского научного центра РАН, 2016. - 167 с. : ил., табл.

S.M. Chemiakov radar of partial reflections of the observatory “Tumanny” have allowed calculating of the values of effective recombination coefficients for the heights of D-region of the high-altitude ionosphere. The received values have agreement with experimental and model data. Processes of transfer during the solar eclipses significantly influence on the electron concentration profiles at the heights of the D-region of the ionosphere in high latitudes that complicates determination of effective recombination coefficients. Nevertheless observations of electron concentration behavior during a solar eclipse allow receiving values of effective recombination coefficients under favorable conditions. References Alpert Ya. L. (1972) Spreading of electromagnetic waves and ionosphere. M: Science. 564 p. (in Russian). Appleton E. V. (1953) A note on the “sluggishness” of the ionosphere, J. Atmos. Terr. Phys., V. 3, N 5, 282-284. Astronomical Yearbook 2015 (2014), Institute of Applied Astronomy, SPb: IAA RAS, 683 p. (in Russian). Belikovich V. V., Vyakhirev V. D., Kalinina E. E. (2004) Research of the ionosphere by the method of partial reflections, Geomagnetism and Aeronomy, V. 44, N 2, 189-194 (in Russian). Belrose, J. S., Burke M. J. (1964) Study of the lower ionosphere using partial reflection. I. Experimental technique and methods of analysis, J. Geophys. Res., V. 69, № 13, 2799-2818. Chemiakov S. М., Tereshchenko V. A., Ogloblina O. F., Vasiliev E. B., Gomonov A. D. (2016) The 20 March 2015 total solar eclipse: wave effects in the lower ionosphere of high latitudes, Proc. the IV All-Russian scientific conference “Problems of military-applied geophysics and control of environment condition” / ed.Yu. V. Kuleshov. SPb: VKA A.F. Mozhaiskogo, 671-676 (in Russian). Chimonas G., Hines C. O. (1970) Atmospheric gravity waves induced by a solar eclipse, J. Geophys. Res., V. 75, N 4, 875. Gardner F. F., Pawsey J. L. (1953) Study of the ionospheric D-region using partial reflections, J. Atmos. Terr. Phys., V. 3, № 6, 321-344. Hanuise C., Broche P., Ogubazghi G. (1982) HF Doppler observations of gravity waves during the 16 February 1980 solar eclipse, J. Atmos. Terr. Phys., V. 44, N 11,609-616. Ivanov V. A., Ivanov D. V., Ryabova N. V., Ryabova М. I. (2012) Researches of high-frequency signals spreading features along oblique and NVIS radio canals during the periods of solar eclipses, Bulletin of NNSU. Radiophysics, N2(1), 59-65. Rapoport Z. T. (1972) Researches of the D-region of the ionosphere by the method of partial reflections, In Proc. “Summary of the Technics and Science”, series “Geomagnetism and higher layers of the atmosphere”, V .l, М.: VINITI, 172-189 (in Russian). Ratcliffe J. A., Weekes K. Ionosphere / In book “Physics of the upper atmosphere” / Ed. by J. A. Ratcliffe. M: Fizmatgiz, 1963. P. 339-418 (in Russian). Sauli P. S., Roux G., Abry P., Boska L. (2007) Acoustic-gravity waves during solar eclipses: detection, characterization and modeling using wavelet transforms, J. Atmos. Sol.-Terr. Phys., V. 69, № 17-18, 2465-2484. Tereshchenko V. D., Tereshchenko V. A., Chemiakov S. М., Ogloblina O. F. (2012) Experimental researches of wave disturbances in the polar lower ionosphere during the partial solar eclipse on 1 June 2011, Physics of Auroral Phenomena, Proc. of the XXXV Annual Seminar, 28 February - 2 March, 2012, Apatity, Russia, Apatity: KSC RAS, PGI, 115-118. Tereshchenko V. D., Vasiliev E. B., Ovchinnikov N. A., Popov A. A. (2003) Medium wave radar of the Polar Geophysical Institute for research of the lower ionosphere, Technics and methods of physical experiment. Apatity: KSC RAS, 37-46. Tereshchenko V. D., Vasiljev E. B., Tereshchenko V. A., Ogloblina O. F., Chemiakov S. M. (2009) About the polar lower ionosphere behavior during the solar eclipse on 1 August 2008, Proc. of the XXXII Annual Seminar on Physics of Auroral Phenomena, Apatity, Russia, 3-6 March, 2009, Apatity: KSC RAS, PGI, 185-188. Tereshchenko V. D., Vasiljev E. B., Yakimov М. V., Tereshchenko V. A., Ogloblina O. F. (2001) The radar observations of the lower polar ionosphere during the solar eclipse of 1999 August 11, Proc. of the 24th Annual Seminar on Physics Auroral Phenomena, Apatity, Russia, 27 February - 2 March, 2001, Apatity: KSC RAS, PGI, 128-130. 91