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


Total article views: 2,054 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
1,588 417 49 2,054 40 40
  • HTML: 1,588
  • PDF: 417
  • XML: 49
  • Total: 2,054
  • BibTeX: 40
  • EndNote: 40
Views and downloads (calculated since 20 Oct 2021)
Cumulative views and downloads (calculated since 20 Oct 2021)

Viewed (geographical distribution)

Total article views: 2,054 (including HTML, PDF, and XML) Thereof 1,934 with geography defined and 120 with unknown origin.
Country # Views %
  • 1


Latest update: 14 Jun 2024
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.