Articles | Volume 25, issue 2
https://doi.org/10.5194/nhess-25-657-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-25-657-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
13 Feb 2025
Research article |
| 13 Feb 2025
| 13 Feb 2025
Probabilistic hazard analysis of the gas emission of Mefite d'Ansanto, southern Italy
Dipartimento di Scienze della Terra e Geoambientali, University of Bari Aldo Moro, Bari, Italy
The Lyell Centre, British Geological Survey, Edinburgh, United Kingdom
Giovanni Chiodini
Sezione di Bologna, Istituto Nazionale di Geofisica e Vulcanologia, Bologna, Italy
Antonio Costa
Sezione di Bologna, Istituto Nazionale di Geofisica e Vulcanologia, Bologna, Italy
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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.
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Nat. Hazards Earth Syst. Sci., 23, 2289–2311, https://doi.org/10.5194/nhess-23-2289-2023, https://doi.org/10.5194/nhess-23-2289-2023, 2023
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A new methodology to calculate a probabilistic long-term tephra fallout hazard assessment in southern Italy from the Neapolitan volcanoes is provided. By means of thousands of numerical simulations we quantify the mean annual frequency with which the tephra load at the ground exceeds critical thresholds in 50 years. The output hazard maps account for changes in eruptive regimes of each volcano and are also comparable with those of other natural disasters in which more sources are integrated.
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Leonardo Mingari, Arnau Folch, Andrew T. Prata, Federica Pardini, Giovanni Macedonio, and Antonio Costa
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Manuel Titos, Beatriz Martínez Montesinos, Sara Barsotti, Laura Sandri, Arnau Folch, Leonardo Mingari, Giovanni Macedonio, and Antonio Costa
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Short summary
We present results of non-volcanic-gas (CO2) hazard assessment at the Mefite d’Ansanto area (Italy) where a cold-gas stream, which has already been lethal to humans and animals, forms in the valleys surrounding the emission zone. We took the uncertainty related to the gas emission and meteorological conditions into account. Results include maps of CO2 concentrations at defined probability levels and the probability of overcoming specified CO2 concentrations over specified time intervals.
We present results of non-volcanic-gas (CO2) hazard assessment at the Mefite d’Ansanto area...
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