Abstract
Волновые возмущения в атмосфере, сопровождавшие извержение вулкана Райкоке (Курильские острова) 21–22 июня 2019 г.
Highlights
We identified Infrasound signals (IS) of two frequency ranges: f = 0.08– 0.5 Hz and f = 0.004–0.012 Hz
The first one was caused by magma fragmentation and nonstationary processes, appeared during the ash-gas mix outflowing from the crater
The second IS range is associated with an eruptive column forming and an eruptive cloud appearance
Summary
Infrasound signals (IS), accompanied the most powerful episodes of the Raykoke volcano of the 21–22 June 2019, were registered by the network of observation stations, located at the distances of 335 to 974 km from the volcano. We identified IS of two frequency ranges: f = 0.08– 0.5 Hz and f = 0.004–0.012 Hz. The first one was caused by magma fragmentation and nonstationary processes, appeared during the ash-gas mix outflowing from the crater.
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