Publication Date:
2017-04-04
Description:
We describe a numerical simulation of both concentrated and dilute gravity-driven pyroclastic flows on a digital topographic model of the Campi Flegrei volcanic field. Families of numerical flows are generated by sampling a multi-dimensional matrix of vent coordinates, flow properties and dynamical parameters within a wide range of values. Hazard maps are constructed from the data base of simulated flows, using a mixed deterministic^statistical
approach. The set of probable vents covers the area of recent eruptions. Results show the key role of topography in controlling the flow dispersion. The maximum hazard appears to be the NE sector of the caldera. Flows in the eastern
sector, including the city of Naples, are shown to be efficiently hindered by the Posillipo and Camaldoli hills at the caldera borders, thus reducing the hazard. The results represent the first physically based estimate of hazard from
pyroclastic flows in this densely populated area, and can be used for civil defence purposes.
Description:
Published
Description:
1-14
Description:
partially_open
Keywords:
Campi flegrei
;
calderas
;
pyroclastic flows
;
hazard maps
;
05. General::05.01. Computational geophysics::05.01.04. Statistical analysis
;
05. General::05.02. Data dissemination::05.02.03. Volcanic eruptions
;
04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
Format:
497 bytes
Format:
966713 bytes
Format:
text/html
Format:
application/pdf
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