Computer Science – Sound
Scientific paper
Aug 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cosre..46..339k&link_type=abstract
Cosmic Research, Volume 46, Issue 4, pp.339-346
Computer Science
Sound
94.20.Vv, Ionospheric Disturbances, Irregularities, And Storms
Scientific paper
Ionospheric disturbances in the equinox periods of 2005-2006 are considered on the basis of the ionosondes of vertical and oblique sounding located in the north-east region of Russia. It is found that the X-ray flares observed in the first half of September 2005 caused an additional increase in the ionization of the lower ionosphere in the daytime, this fact leading to a development of absorption and an increase in the lowest observable frequencies at the Magadan-Irkutsk and Noril’sk-Irkutsk radio paths. Wave-like changes in the maximum observable frequencies and critical frequencies with periods of about 2-2.5 h were detected during the magnetic disturbances. Oscillations of the planetary wave type with periods of 4-5 days were also revealed.
Kurkin Vladimir I.
Pirog O. M.
Poddel'Skii I. N.
Polekh Nelya M.
Stepanov A. E.
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