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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Index

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

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