Long-term hazard of pyroclastic density currents at Vesuvius (Southern Italy) with maps of impact parameters

Dellino, Pierfrancesco; Dioguardi, Fabio; Sulpizio, Roberto; Mele, Daniela

doi:https://doi.org/10.5194/nhess-25-2823-2025

Articles | Volume 25, issue 8

https://doi.org/10.5194/nhess-25-2823-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/nhess-25-2823-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 25, issue 8

Research article

|

25 Aug 2025

Research article |

| 25 Aug 2025

Long-term hazard of pyroclastic density currents at Vesuvius (Southern Italy) with maps of impact parameters

Pierfrancesco Dellino, Fabio Dioguardi, Roberto Sulpizio, and Daniela Mele

Data sets

Pyroclastic density currents hazard simulation data at Mt. Vesuvius, Italy Daniela Mele et al. https://doi.org/10.5281/zenodo.13682628

Model code and software

PYFLOW_2.0: a computer program for calculating flow properties and impact parameters of past dilute pyroclastic density currents based on field data (https://github.com/FabioDioguardi/PYFLOW/releases/tag/v_2.5) F. Dioguardi and D. Mele https://doi.org/10.1007/s00445-017-1191-z

Short summary

Pyroclastic deposits are the only records left by pyroclastic flows at Vesuvius, and deposits from past eruptions are the only way to get information about the expected range of impact parameters. It is necessary to investigate the deposits first and then define a general model of the current that links deposit characteristics to flow dynamics, finally reconstructing the impact parameters that better represent flow intensity in terms of damaging potential. This is the way the paper is organized.