Observation data on wave-like processes in ionosphere under quiet and disturbed conditions

1Burmaka, VP, 2Lysenko, VN, 3Chernogor, LF
1Institute of Ionosphere of National Academy of Sciences of Ukraine and Ministry of Education and Science of Ukraine, Kharkiv, Ukraine
2Institute of Ionosphere of the National Academy of Sciences of Ukraine and Ministry of Education and Science of Ukraine, Kharkiv, Ukraine
3V.N. Karazin National University of Kharkiv, Kharkiv, Ukraine
Kosm. nauka tehnol. 2005, 11 ;(1-2):037-057
Publication Language: Russian
Wave-like disturbances (WLDs) with periods of 30–120 mill over an altitude range from 125 to 500 km (in some experiments from 100 to 1000 km) are studied. Measurements of common duration more than 400 h are carried out under various conditions of space weather (in conditions of quiet ionosphere, during magnetic and ionospheric storms, during Iwo eclipses of the Sun). It is shown that WLDs in the ionosphere exist practically constantly. The action of natural or artificial sources of energy produces changes in WLDs character, their speclral structure and amplitude variations. The amplitudes vary significantly during a day depending on space weather conditions. The relative amplitudes of WLDs change from units up to many ten percents.
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