Articles | Volume 13, issue 5
Research article
10 May 2022
Research article |  | 10 May 2022

Transient conduit permeability controlled by a shift between compactant shear and dilatant rupture at Unzen volcano (Japan)

Yan Lavallée, Takahiro Miwa, James D. Ashworth, Paul A. Wallace, Jackie E. Kendrick, Rebecca Coats, Anthony Lamur, Adrian Hornby, Kai-Uwe Hess, Takeshi Matsushima, Setsuya Nakada, Hiroshi Shimizu, Bernhard Ruthensteiner, and Hugh Tuffen


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on se-2021-127', Michael Heap, 20 Oct 2021
    • AC1: 'Reply on RC1', Yan Lavallée, 10 Feb 2022
  • RC2: 'Comment on se-2021-127', Ulrich Kueppers, 07 Dec 2021
    • AC2: 'Reply on RC2', Yan Lavallée, 10 Feb 2022
  • EC1: 'Comment on se-2021-127', Antonella Longo, 14 Feb 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Yan Lavallée on behalf of the Authors (07 Mar 2022)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (09 Mar 2022) by Antonella Longo
ED: Publish as is (09 Mar 2022) by Joachim Gottsmann(Executive Editor)
Short summary
Volcanic eruptions are controlled by the presence of gas bubbles in magma, which, in excess, can cause explosions. Eruption models lack an understanding of how gas percolates in magma flowing in a conduit. Here we study gas percolation in magma associated with the 1994–1995 eruption at Mt. Unzen, Japan. The results show that the pathways for gas escape depend on the depth and ascent rate of magma. Pathways closed at depth but opened along fractures when magma ascended rapidly near the surface.