TY JOUR TI Studying the dynamics of electric currents and polar caps in ionospheres of two hemispheres during the August 17, 2001 geomagnetic storm KW current function KW ionospheric convection KW polar cap KW auroral electrojets KW field-aligned currents KW magnetic storms and substorms KW dawn–dusk asymmetry KW interhemispheric asymmetry JO Solnechno-Zemnaya Fizika AU Lunyushkin, S.B. AU Mishin, V.V. AU Karavaev, Y.A. AU Penskikh, Y.V. AU Kapustin, V.E. PY 2019 IS 5 PB INFRA-M Academic Publishing LLC.