Affiliation: | 1.Polar Geophysical Institute, Kola Scientific Center, 184209, Apatity, Murmansk oblast, Russia ;2.Murmansk Arctic State University, 184209, Apatity, Murmansk oblast, Russia ;3.Skobeltsyn Institute of Nuclear Physics, Moscow State University, 119991, Moscow, Russia ;4.Space Research Institute, Russian Academy of Sciences, 117997, Moscow, Russia ; |