AGU: Geophysical Research Letters

 

Editors' Highlight

Modeling volcanic hazards on Italy's Mount Vesuvius

Mount Vesuvius, an Italian volcano with a history of explosive eruptions, poses a serious threat to the nearly 1 million who live near its flanks. To help quantify this hazard, Neri et al. (2007) used numerical simulations based on flow transport models to analyze possible scenarios of the geographic distribution of volcanic debris as it would evolve over the duration of a medium-scale Vesuvian eruption. In particular, the authors focused on hazards posed by pyroclastic density flows, which are rivers of hot volcanic debris and gas that course down the mountain during an eruption and are the most destructive and deadliest of volcanic phenomena. Their simulations showed that local topography such as the nearby Mount Somma volcano significantly influences the propagation of flow into the circum-Vesuvian area. Their results also revealed that it is possible to characterize an erupting collapsing column by the percentage of the mass of pyroclasts that were able to collapse to the ground. On the basis of this, low-fountaining boiling-over events appear to be the most hazardous scenarios.

View abstract

View full article (Subscription required)