TY JOUR TI The Geomagnetically Induced Current Extremal Values Estimation Based on Baygazan Magnetical Station Data KW Geomagnetically-induced current KW South Siberia KW simulation KW bay-like disturbances KW geomagnetic pulsation KW SSC JO Russian Journal of Earth Sciences AU Gvozdarev, A.Y. AU Uchaykin, E.O. PY 2026 IS 25 PB Geophysical Center of the Russian Academy of Sciences