Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/9442
AuthorsTonini, R.* 
Sandri, L.* 
Costa, A.* 
Selva, J.* 
TitleBrief Communication: The effect of submerged vents on probabilistic hazard assessment for tephra fallout
Issue Date2015
Series/Report no./15(2015)
DOI10.5194/nhess-15-409-2015
URIhttp://hdl.handle.net/2122/9442
Keywordsprobabilistic volcanic hazard assessment
submerged volcanic systems
tephra fallout
campi flegrei
Subject Classification05. General::05.02. Data dissemination::05.02.03. Volcanic eruptions 
AbstractMany volcanic systems are partially or entirely submerged, implying that vents may open underwater. The effect of submerged vents on probabilistic volcanic hazard assessment (PVHA) for tephra fallout has always been neglected, introducing potentially uncontrolled biases. We present a strategy to quantify the effect of submerged vents on PVHA for tephra fallout, based on a simplified empirical model in which the efficiency of tephra production decreases as a function of the water depth above the eruptive vent. The method is then applied to Campi Flegrei caldera, comparing its results to those of two reference end-member models and their statistical mixing.
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