00797naa#a2200205#i#450# EN\\bibl\28766 20260314010629.6 2712-9640 20200922b2020####ek#y0engy0150####ca RUS RU Features of excitation and azimuthal and meridional propagation of long-period Pi3 oscillations of the geomagnetic field on December 8, 2017 Journal article Irkutsk Institute of Solar-Terrestrial Physics SB RAS 2020 16 с. Journal article local Геология. Геологические и геофизические науки. 55 RUS Moiseev Aleksey Vladimirovich Starodubtsev Sergei Anatolyevich Mishin Vladimir Vilenovich ras.editorum.ru