Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/11434
Authors: Salvatici, Teresa* 
Di Roberto, Alessio* 
Di Traglia, Federico* 
Bisson, Marina* 
Morelli, Stefano* 
Fidolini, Francesco* 
Bertagnini, Antonella* 
Pompilio, Massimo* 
Hungr, Oldrich* 
Casagli, Nicola* 
Title: From hot rocks to glowing avalanches: Numerical modelling of gravity-induced pyroclastic density currents and hazard maps at the Stromboli volcano (Italy)
Journal: Geomorphology 
Series/Report no.: /273 (2016)
Issue Date: 2016
DOI: 10.1016/j.geomorph.2016.08.011
Keywords: Pyroclastic density currents, Geophysical flow modelling, Stromboli volcano, Hazard maps
Abstract: Gravity-induced pyroclastic density currents (PDCs) can be produced by the collapse of volcanic crater rims or due to the gravitational instability of materials deposited in proximal areas during explosive activity. These types of PDCs, which are also known as “glowing avalanches”, have been directly observed, and their deposits have been widely identified on the flanks of several volcanoes that are fed by mafic to intermediatemagmas. In this research, the suitability of landslide numerical models for simulating gravity-induced PDCs to provide hazard assessmentswas tested. This work also presents the results of a back-analysis of three events that occurred in 1906, 1930 and 1944 at the Stromboli volcano by applying a depth-averaged 3Dnumerical code named DAN-3D. The model assumes a frictional internal rheology and a variable basal rheology (i.e., frictional, Voellmy and plastic). The numerical modelling was able to reproduce the gravity-induced PDCs' extension and deposit thicknesses to an order ofmagnitude of that reported in the literature. The best resultswhen comparedwith field datawere obtained using a Voellmymodelwith a frictional coefficient of f=0.19 and a turbulence parameter ξ=1000 m s−1. The results highlight the suitability of this numerical code,which is generally used for landslides, to reproduce the destructive potential of these events in volcanic environments and to obtain information on hazards connected with explosive-related, mass-wasting phenomena in Stromboli Island and at volcanic systems characterized by similar phenomena.
Appears in Collections:Article published / in press

Files in This Item:
File Description SizeFormat Existing users please Login
Salvatici et al. 2016 Geomorph.pdf4.15 MBAdobe PDF
Show full item record

WEB OF SCIENCETM
Citations 20

12
checked on Feb 10, 2021

Page view(s)

427
checked on Mar 27, 2024

Download(s)

4
checked on Mar 27, 2024

Google ScholarTM

Check

Altmetric