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The rebirth and evolution of Bezymianny volcano, Kamchatka after the 1956 sector collapse

Earth Sciences

The rebirth and evolution of Bezymianny volcano, Kamchatka after the 1956 sector collapse

A. V. Shevchenko, V. N. Dvigalo, et al.

This paper explores the fascinating seven-decade evolution of Bezymianny volcano following its dramatic 1956 collapse. Witness the rebirth of this majestic edifice, characterized by the formation of lava domes and the subsequent construction of a stratocone. Conducted by Alina V. Shevchenko and colleagues, this research provides critical insights into volcanic behavior and growth rates.

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Playback language: English
Abstract
This paper presents a seven-decade-long study of Bezymianny volcano's evolution after a 1956 sector collapse using photogrammetric data. Edifice rebirth began with two lava domes, transitioning to more effusive activity with migrating vents, and finally culminating in a stratocone with a summit crater. A long-term average growth rate of 26,400 m³/day is determined, suggesting a return to pre-collapse size within 15 years. Numerical modeling links the gradual vent focusing to loading changes affecting magma pathways.
Publisher
Communications Earth & Environment
Published On
Sep 10, 2020
Authors
Alina V. Shevchenko, Viktor N. Dvigalo, Thomas R. Walter, Rene Mania, Francesco Maccaferri, Ilya Yu. Svirid, Alexander B. Belousov, Marina G. Belousova
Tags
Bezymianny volcano
volcanic evolution
lava domes
stratocone
magma pathways
photogrammetry
vent focusing

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