Physics of auroral phenomena : proceedings of the 38th annual seminar, Apatity, 2-6 march, 2015 / [ed. board: A. G. Yahnin, N. V. Semenova]. - Апатиты : Издательство Кольского научного центра РАН, 2015. - 189 с. : ил., табл.

The electric potential distribution in the disturbedpolar ionosphere In contrast, the ground-based magnetometer network allows us to obtain the electric potential map for a specified time without averaging, these results, in turn, contain their own error of the MIT method. The main findings of this study are as follows. 1. Both methods give the expected and qualitatively similar large-scale, two-vortex systems of the ionospheric convection with similar values of the cross polar cap potential drop, UPc ~ (42-46) kV. 2. The method, based on SuperDARN measurements data, cannot detect the irregular component in the electric potential distributions, whereas the MIT method reflects the development of the corresponding mesoscale convection vortices during substorms. Even for the considered weak substorm the irregular component of about 20 kV is observed, which is comparable to the contribution of the regular component. 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