Institution: | (1) Institute of Terrestrial Magnetism, Ionosphere, and Radiowave Propagation, St. Petersburg Branch, Russian Academy of Sciences, Muchnoi per. 2, St. Petersburg, 191023, Russia;(2) Ioffe Physico-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia;(3) Polar Geophysical Institute, Kola Scientific Center, Russian Academy of Sciences, ul. Khalturina 15, Murmansk, 183010, Russia |