Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/6434
AuthorsMarzocchi, W.* 
Sandri, L.* 
Selva, J.* 
TitleBET VH: a probabilistic tool for long-term volcanic hazard assessment
Issue DateAug-2010
Series/Report no.6/72 (2010)
DOI10.1007/s00445-010-0357-8
URIhttp://hdl.handle.net/2122/6434
KeywordsVolcanic hazard
Probabilistic assessment
Bayesian event tree
Subject Classification04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk 
AbstractIn this paper we illustrate a Bayesian Event Tree to estimate Volcanic Hazard (BET VH). The procedure enables us to calculate the probability of any kind of long-term hazardous event for which we are interested, accounting for the intrinsic stochastic nature of volcanic eruptions and our limited knowledge regarding related processes. For the input, the code incorporates results from numerical models simulating the impact of hazardous volcanic phenomena on an area, and data from the eruptive history. For the output, the code provides a wide and exhaustive set of spatio-temporal probabilities of different events; these probabilities are estimated by means of a Bayesian approach that allows all uncertainties to be properly accounted for. The code is able to deal with many eruptive settings simultaneously, weighting each with its own probability of occurrence. In a companion paper, we give a detailed example of application of this tool to the Campi Flegrei caldera, in order to estimate the hazard from tephra fall.
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