Urban management to mitigate natural hazard. Urban management in area exposed to natural hazard: an example from Campi Flegrei (Southern Italy)

The research deals with a methodological approach for urban management in areas exposed to natural risks where a short period evacuation could be necessary. The test area for this investigation is Agnano, Fuorigrotta, Soccavo and Pianura plain, a subset of Napoli city and a limited area of Pozzuoli municipality exposed to volcanic hazard. For Volcanic Explosivity Index (VEI) equal to 3 and 4 the study area shows medium-high frequency to be hit by Pyroclastic Density Current (PDC). This condition and its geomorphological features gave the reasons to choose this area for a detailed study on the analysis of exposed value (E) in order to delimit different homogenous zones for urbanization type, population density, morphological features and road network distribution. The final purpose of the research is to recognize the road nodes where people can be collected before leaving the area.