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Proceedings Paper

Variations of low ionosphere parameters during partial solar eclipse on August 11, 2018 by the VLF signal phase variations and the partial reflections method
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Paper Abstract

The maximum increase in the phase delay of the JXN radio signal during the solar eclipse on August 11, 2018 was 0.256 radians (09:48 UT) and 0.227 radians (09:56 UT) during VLF registration at Tixie Bay and Yakutsk, respectively. The normalization coefficients relating the effective height changes of the Earth-ionosphere waveguide and the logarithm of the ratio of the solar radiation flux during the eclipse to the total radiation flux for the daytime are 3.43 ± 0.21 and 2.23 ± 0.09 km for the JXN – Tixie Bay and JXN – Yakutsk radio paths respectively. According to our estimates for the segment of the JXN – Tixie Bay path (75° N, 113° E, a local maximum eclipse at 09:43:48 UT, the linear phase Φ = 0.628) the maximum increase of the effective height of the Earth-ionosphere waveguide was 2.28 km. For the segment of the JXN – Yakutsk path (70° N, 113° E, a local maximum eclipse at 09:56:24 UT, the linear phase Φ = 0.627) the maximum increase of the effective height of the Earth-ionosphere waveguide was 1.47 km. At the partial reflection radar of the PGI (69.0° N, 35.7° E) the eclipse was just before local noon when electron density of the lower ionosphere increased and the effect of a relatively weak solar eclipse was not detected (the maximum of the eclipse linear phase Φ = 0.313 at 09:27 UT).

Paper Details

Date Published: 18 December 2019
PDF: 8 pages
Proc. SPIE 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 112088U (18 December 2019); doi: 10.1117/12.2540355
Show Author Affiliations
Alexey A. Korsakov, Yu. G. Shafer Institute of Cosmophysical Research and Aeronomy (Russian Federation)
Sergei M. Cherniakov, Polar Geophysical Institute (Russian Federation)
Vladimir I. Kozlov Sr., Yu. G. Shafer Institute of Cosmophysical Research and Aeronomy (Russian Federation)
Rustam R. Karimov, Yu. G. Shafer Institute of Cosmophysical Research and Aeronomy (Russian Federation)


Published in SPIE Proceedings Vol. 11208:
25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics
Oleg A. Romanovskii; Gennadii G. Matvienko, Editor(s)

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