Multipoint observations of Ionospheric Alfvén Resonance

The authors are thankful to the National Antarctic Scientific Center of Ukraine, Ministry of Education and Science of Ukraine for supporting of the long-term ULF-ELF monitoring at UAS "Academic Vernadski". Also we are thankful to the winterer-geophysics and specialists of IRA NASU and ISTP SB RAS for the skilled work for maintaining the receiving devices in Antarctica, Ukraine and Russia that is provided the high quality data. This research was partially supported by the National Academy of Sciences of Ukraine projects "Yatagan-3" (N 0116U000035) and "Spitsbergen-2016" (N 0116U002874).