Institute of Volcanology and Seismology FEB RAS Repository
IVS FEB RAS
Поиск
Browse
IVS FEB RAS Items
Statistics
Instruction
Links

Modeling Strombolian eruptions of Karymsky volcano, Kamchatka, Russia

Ozerov A., Ispolatov I., Lees J. (2003) Modeling Strombolian eruptions of Karymsky volcano, Kamchatka, Russia // Journal of Volcanology and Geothermal Research. Vol. 122, No. 3–4. pp. 265 - 280. doi: 10.1016/S0377-0273(02)00506-1.

[img]
Preview
Text
my_2003_f_en_JVGR.pdf

Download (674kB) | Preview

Official URL: http://www.sciencedirect.com/science/article/pii/S...

Abstract

A model is proposed to explain temporal patterns of activity in a class of periodically exploding Strombolian-type andesite volcanoes. These patterns include major events (explosions) which occur every 3–30 min and subsequent tremor with a typical period of 1 s. This two-periodic activity is thought to be caused by two distinct mechanisms of accumulation of the elastic energy in the moving magma column: compressibility of the magma in the conduit and viscoelastic response of the almost solid magma plug on the top. A release of the elastic energy occurs during a stick–slip dynamic phase transition in a boundary layer along the walls of the conduit; this phase transition is driven by the shear stress accumulated in the boundary layer. The intrinsic hysteresis of this first-order phase transition explains the long periods of inactivity in the explosion cycle. Temporal characteristics of the model are found to be qualitatively similar to the acoustic and seismic signals recorded at Karymsky volcano in Kamchatka.
Item Type: Article
Title: Modeling Strombolian eruptions of Karymsky volcano, Kamchatka, Russia
Language: English
Journal or Publication Title: Journal of Volcanology and Geothermal Research
ISSN Print: 0377-0273
Uncontrolled Keywords: volcano, eruption, periodicity, stick–slip transition, viscoelasticity, hysteresis
Subjects: State scientific and technical information rubricator (ГРНТИ) > 38 ГЕОЛОГИЯ > 38.37 Петрография > 38.37.25 Вулканология
Volcanoes > 1 Volcanoes of the Kurile-Kamchatka Region > 1.1 Kamchatka > Karymsky
Depositing User: И.М. Романова
Date Deposited: 17 Dec 2015 05:26
Last Modified: 03 Feb 2019 22:19
URI: http://repo.kscnet.ru/id/eprint/2563

Actions (login required)

View Item View Item