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ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2023, Vol. 20, No. 3, pp. 285-297

Long-term variations of ionization drift velocities over the south of Eastern Siberia

M.A. Chernigovskaya 1 , D.S. Khabituev 1 
1 Institute of Solar-Terrestrial Physics SB RAS, Irkutsk, Russia
Accepted: 14.06.2023
DOI: 10.21046/2070-7401-2023-20-3-285-297
Based on statistical analysis of a large array of archival experimental data on the dynamic regime of the ionosphere over Irkutsk, statistical long-term characteristics of the horizontal drift of ionization irregularities over the region of the south of Eastern Siberia have been obtained. The measurements were carried out by radiophysical spaced-receiver method with a small base of the radio signal reflected from the ionosphere during vertical ground-based radio sounding in 1958–1982. The analysis of the data of long-term measurements confirmed the obvious differences in the nature of the dynamic regime of the lower and upper ionosphere. It is shown that the motion of ionization in the zonal direction is more regular than the meridional drift. The characteristic seasonal features of variations in the amplitudes and directions of horizontal drift motions at altitudes E and F of the ionosphere regions are determined.
Keywords: ionospheric dynamics, spaced-receiver method, long-term variations, seasonal variations, lower and upper ionosphere, statistical data analysis
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