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Title: New insight Into a volcanic system : analogue investigation of bubble-driven deformation in an elastic conduit
Authors: Manta, Fabio
Emadzadeh, Adel
Taisne, Benoit
Keywords: Science::Geology
Issue Date: 2019
Source: Manta, F., Emadzadeh, A., & Taisne, B. (2019). New insight Into a volcanic system : analogue investigation of bubble-driven deformation in an elastic conduit. Journal of Geophysical Research: Solid Earth, 124(11), 11274-11289. doi:10.1029/2019JB017665
Journal: Journal of Geophysical Research: Solid Earth
Abstract: Analogue and numerical simulations have been widely used to describe the mechanisms of bubble and slug ascent during volcanic eruptions as well as their formation and explosion mechanisms. Nevertheless, little is known about the mechanical interaction between the fluid and the surrounding medium. In this work, we report the results from analogue experiments designed to show how deformation of the conduit walls induced by the rising slugs is related to the radiation and propagation of seismic and geodetic signals. For the first time, we investigate the dynamics of bubbles in an elastic conduit unveiling the relationship between slugs and crustal strain accumulation around the conduit. Moreover, we discuss the retroactive effects of the deformed conduit wall on the dynamics of a rising slug, particularly, how the flow is affected, and the eventual implications on the intensity of the eruption. Our results show that the combination of an elastic conduit with a large volume of gas may lead to the development of a new type of slug, here defined as a “super slug,” characterized by tapering towards the tail and a much higher ascent velocity and inner pressure compared with ordinary slugs. This newly observed behavior could be linked to vigorous explosive events.
ISSN: 2169-9356
DOI: 10.1029/2019JB017665
DOI (Related Dataset):
Schools: Asian School of the Environment 
Research Centres: Earth Observatory of Singapore 
Rights: © 2019 The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:ASE Journal Articles

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