Assessing minimum pyroclastic density current mass to impact critical infrastructures: example from Aso caldera (Japan)

Bevilacqua, Andrea; Aravena, Alvaro; Aspinall, Willy; Costa, Antonio; Mahony, Sue; Neri, Augusto; Sparks, Stephen; Hill, Brittain

doi:https://doi.org/10.5194/nhess-22-3329-2022

Articles | Volume 22, issue 10

https://doi.org/10.5194/nhess-22-3329-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/nhess-22-3329-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 10

Research article

|

14 Oct 2022

Research article |

| 14 Oct 2022

Assessing minimum pyroclastic density current mass to impact critical infrastructures: example from Aso caldera (Japan)

Andrea Bevilacqua, Alvaro Aravena, Willy Aspinall, Antonio Costa, Sue Mahony, Augusto Neri, Stephen Sparks, and Brittain Hill

Supplement

https://doi.org/10.5194/nhess-22-3329-2022-supplement

Model code and software

AlvaroAravena/BoxMapProb: BoxMapProb (v2.0) A. Aravena https://doi.org/10.5281/zenodo.7189776

PyBox: a Python tool for simulating the kinematics of pyroclastic density currents with the box-model approach, Reference and user's guide G. Biagioli, A. Bevilacqua, T. Esposti~Ongaro, and M. de' Michieli Vitturi https://doi.org/10.5281/zenodo.2616551

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Short summary

We evaluate through first-order kinetic energy models, the minimum volume and mass of a pyroclastic density current generated at the Aso caldera that might affect any of five distal infrastructure sites. These target sites are all located 115–145 km from the caldera, but in well-separated directions. Our constraints of volume and mass are then compared with the scale of Aso-4, the largest caldera-forming eruption of Aso.