Abstract
Calculation results of the variations of dynamic and thermal process parameters in geospace plasma during the 13–15 November 2012, magnetic storm (MS) over Kharkov are presented. The calculations were based on experimental data obtained on the Kharkov incoherent scatter radar, single in the European mid-latitudes. Calculations showed that during the MS there took place an increase, by modulus, of the values of vertical component of transfer velocity, due to ambipolar diffusion, up to a factor of 1.4–2.1. During the MS there took place a decrease of the values of energy input to the electron gas by about 20–35%. During the main phase of MS, the heat flux density transferred by electrons increased up to a factor of 2–2.5. Results of estimates of the zonal component electric field value Ey are presented. During the MS the value of Ey was −9.5 mV/m. The vertical component of plasma velocity due to electromagnetic drift vEB has been calculated.
Highlights
Dynamic and thermal processes play an important role in the formation of spatial structure of the ionospheric plasma at altitudes of the F2 region of the ionosphere
Temporal variations of the vertical component of the plasma transport velocity due to ambipolar diffusion vdz at altitudes of 250-400 km during the 13-15 November 2012 magnetic storm is presented in Fig. 1
The effects of the strong geospace storm on 13-14 November 2012 were well marked in variations of the electron density, electron and ion temperatures, and the vertical component of the plasma transfer velocity in the ionosphere over Kharkov
Summary
Dynamic and thermal processes play an important role in the formation of spatial structure of the ionospheric plasma at altitudes of the F2 region of the ionosphere. As shown by experimental studies, the effects of strong geospace disturbances (geospace storms) are well manifested in variations of the dynamic and thermal processes in the ionosphere. Strong magnetic storms lead to significant changes in the dynamic and thermal modes of the ionospheric plasma. Such effects have been recorded in the high latitudes, but in the middle and low latitudes too. For investigation of the effects of the strong geospace storms, various tools of remote and local sounding of the near-Earth space have been used (ionosondes, worldwide network of incoherent scatter radars (ISRs), satellites, etc.)
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