Физико-математические науки
Long-term trends of ionospheric conductivities Pedersen σ1 and σ2 Hall and connection with Sq field in the observatory "Akademik Vernadsky"
Shenderovskaya O.Ya. 2, Maksymenko O.I. 1
1. 2. старший инженер Институт геофизики им. С.И.Субботина НАН Украины, Киев, Палладина 32
Abstract:
The positive trends of integrated conductivities in the ionosphere and their seasonal differences for Pedersen conductivities σ1 and σ2 Hall between the solstices and equinoxes are defined in the area of AIA (65S; -64W) in 1958-2010gg. The magnitude of the trend of the ionospheric conductivity after eliminating its linear dependence on the number of sunspots Rn varied strongly (16-26)% in September, more than (14-20)% in January, with higher values for the conductivity Pedersen in both seasons. Decrease in the 1.4-2 times of the negative (11%) of the trend of the magnetic field relative to the trend value of the conductivity was found, as well as another secondary impact factor - an increase of CO2 by 21%. Found seasonal features of the regression relations between the conductivity and amplitude SqY, SqZ fields with prevalence rates of the vertical component of the field in the summer.
Keywords: ionospheric conductivity, trend, geomagnetic Sq – variations
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