Author:
Shakirova Alexandra,Firstov Pavel
Abstract
The squeezing of viscous lava flows or blocks on an extrusive dome during eruptions of andesitic and dacitic volcanoes is accompanied by volcanic earthquakes the seismic mode «drumbeats». The features of this mode are the quasi-periodicity of the volcanic earthquakes appearance for a long time, uniform waveforms and close VE magnitudes. This mode shows surprisingly the equilibrium behavior of a volcanic eruption.
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