Variations of ionospheric parameters in disturbance conditions which were detected with Kharkiv noncoherent scattering radar

1Zakharov, IG, 2Lyashenko, MV, 1Tyrnov, OF
1V.N. Karazin Kharkiv National University, Kharkiv, Ukraine
2Institute of Ionosphere of the National Academy of Sciences of Ukraine and Ministry for Education and Sciences of Ukraine, Kharkiv, Ukraine
Kosm. nauka tehnol. 2003, 9 ;(Supplement2):048-052
Publication Language: Russian
Variations of electron density N and of other parameters in midlatitude ionosphere under the influence of tidal and planetary waves are investigated. Data of the midlatitude noncoherent scattering radar (Kharkiv, Ukraine) and worldwide ionosonde net data were used for our analysis. It is shown that the contribution of the tidal waves to variations of N remains high during magnetic storms in spite of enhanced influence of auroral sources upon midlatitude ionosphere. Planetary waves are capable of providing significant (> 40 %) and long-term variations in N (of no less than one month) with a period of about seven days and form the stable features of the spatial distribution of N.

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