Articles | Volume 12, issue 3
https://doi.org/10.5194/se-12-633-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-12-633-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
16 Mar 2021
Research article |
| 16 Mar 2021
| 16 Mar 2021
Physical and mechanical rock properties of a heterogeneous volcano: the case of Mount Unzen, Japan
Jackie E. Kendrick
CORRESPONDING AUTHOR
Department of Earth, Ocean and Ecological Sciences, University of Liverpool, Liverpool, L69 3GP, UK
School of GeoSciences, University of Edinburgh, Edinburgh, EH9 3FE, UK
Lauren N. Schaefer
Department of Geological Science, University of Canterbury, Christchurch, 8140, New Zealand
now at: US Geological Survey, Golden, CO 80401, USA
Jenny Schauroth
Department of Earth, Ocean and Ecological Sciences, University of Liverpool, Liverpool, L69 3GP, UK
Andrew F. Bell
School of GeoSciences, University of Edinburgh, Edinburgh, EH9 3FE, UK
Oliver D. Lamb
Department of Earth, Ocean and Ecological Sciences, University of Liverpool, Liverpool, L69 3GP, UK
Department of Geological Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC 27514, USA
Anthony Lamur
Department of Earth, Ocean and Ecological Sciences, University of Liverpool, Liverpool, L69 3GP, UK
Takahiro Miwa
National Research Institute for Earth Science and Disaster Resilience (NIED), Ibaraki, 305 0006, Japan
Rebecca Coats
Department of Earth, Ocean and Ecological Sciences, University of Liverpool, Liverpool, L69 3GP, UK
Yan Lavallée
Department of Earth, Ocean and Ecological Sciences, University of Liverpool, Liverpool, L69 3GP, UK
Ben M. Kennedy
Department of Geological Science, University of Canterbury, Christchurch, 8140, New Zealand
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Short summary
The last lava dome eruption of Mount Unzen (Japan) ended in 1995, but ongoing instability means much of the area remains an exclusion zone. The rocks in the lava dome impact its stability; heterogeneity (contrasting properties) and anisotropy (orientation-specific properties) can channel fluids and localise deformation, enhancing the risk of lava dome collapse. We recommend using measured material properties to interpret geophysical signals and to model volcanic systems.
The last lava dome eruption of Mount Unzen (Japan) ended in 1995, but ongoing instability means...
