LONGITUDINAL INHOMOGENEITIES OF THE IONOSPHERE ELECTRON CONCENTRATION OF THE EURASIA MIDDLE LATITUDES AND THEIR RELATION TO THERMOSPHERIC GAS DISTURBANCES DURING GEOMAGNETIC STORMS UNDER EQUINOX CONDITIONS
Authors:
1.
Institute of Solar Terrestrial Physics SB RAS
Irkutsk, Russian Federation
Irkutsk, Russian Federation
2.
Institute of Solar-Terrestrial Physics SB RAS
Irkutsk, Russian Federation
Irkutsk, Russian Federation
3.
Institute of Solar Terrestrial Physics SB RAS
Obukhov Institute of Atmospheric Physics RAS
Irkutsk, Russian Federation
Obukhov Institute of Atmospheric Physics RAS
Irkutsk, Russian Federation
Type:
Сonference article
Published:
26.06.2025
Language:
Russian
Keywords:
ionosphere, electron concentration, magnetic storms
Funding:
Rabota vypolnena pri finansovoy podderzhke Minobrnauki Rossii. Eksperimental'nye dannye polucheny chastichno s ispol'zovaniem oborudovaniya Centra Kollektivnogo Pol'zovaniya "Angara" (ISZF SO RAN) http://ckp-rf.ru/ckp/3056/.
Abstract (English):
Variations of ionospheric and thermospheric parameters in the Northern Hemisphere were studied based on the analysis of data from the mid-latitude chain of Eurasian ionosondes during periods of strong geomagnetic disturbances of the 24th solar activity cycle under equinox conditions. During the main phase of all analyzed magnetic storms over the middle latitudes of Eurasia, a transition from a positive to a negative ionospheric storm effect was observed. The effect of a negative ionospheric storm during the recovery phase was caused by the formation of vast areas of atmospheric gas with a reduced [O]/[N2] concentration ratio over the region of mid-latitudes of Eurasia.
Variations of ionospheric and thermospheric parameters in the Northern Hemisphere were studied based on the analysis of data from the mid-latitude chain of Eurasian ionosondes during periods of strong geomagnetic disturbances of the 24th solar activity cycle under equinox conditions. During the main phase of all analyzed magnetic storms over the middle latitudes of Eurasia, a transition from a positive to a negative ionospheric storm effect was observed. The effect of a negative ionospheric storm during the recovery phase was caused by the formation of vast areas of atmospheric gas with a reduced [O]/[N2] concentration ratio over the region of mid-latitudes of Eurasia.
Keywords:
ionosphere, electron concentration, magnetic storms
ionosphere, electron concentration, magnetic storms
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