TY JOUR TI Time-spatial correspondence between Pi2 wave power and ultra-violet aurora bursts KW ULF waves KW Pi2 pulsations KW substorm KW auroral oval KW ionospheric electrojet JO Russian Journal of Earth Sciences AU , .. AU , .. AU , .. AU , .. PY 2017 IS 17 PB Геофизический центр Российской Академии Наук