AN INTEGRATED APPROACH FOR DEBRIS FLOW HAZARD ASSESSMENT - A CASE STUDY ON THE AMALFI COAST - CAMPANIA, ITALY — IJEGE
 
 
You are here: Focus and scope Issues from 2005 to 2017 5th International Conference on Debris-Flow Hazards "Mitigation, Mechanics, Prediction and Assessment" Topic 8 - Prediction and Assessment of Debris Flow Hazards AN INTEGRATED APPROACH FOR DEBRIS FLOW HAZARD ASSESSMENT - A CASE STUDY ON THE AMALFI COAST - CAMPANIA, ITALY
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AN INTEGRATED APPROACH FOR DEBRIS FLOW HAZARD ASSESSMENT - A CASE STUDY ON THE AMALFI COAST - CAMPANIA, ITALY



Abstract:
In this work, a multidisciplinary study is presented in which potential debris flow events are studied from their beginning to their end. The case study is located on the Amalfi Coast where historical events of debris flow are well documented in 1910, 1924 and 1954. An integrated approach was used for the geomorphology and geo-pedology of volcanic deposits. The matches found between morphotypes, depositional and pedological processes and soil characteristics made it possible to develop a detailed map of the soil deposits which was then used to estimate the geographical distribution of the parameters relevant in the stability analysis. The modeling of debris flow initiation process is carried out through a stability analysis of the soil after a rainfall characterized by a given intensity and duration. The debris flow volume corresponding to a given return period is subsequently obtained. The propagation of this volume is then simulated through a commercial, two dimensional model (FLO2D). Both modeling approaches, for the initiation and the propagation processes, are tested by comparing them with a historical event in 1954. The integrated procedure described makes it possible to draw up maps of debris flow intensity corresponding to assigned return periods. These elements may be easily elaborated in order to draw up debris flow hazard and risk maps.

Authors:
Maria Nicolina Papa - University of Salerno, Dept. of Civil Engineering - Via Ponte don Melillo - 84084 Fisciano, Italy
Giuliano Trentini - ELEMENTI Associated, via La Marmora 51 - 50121 Firenze, Italy
Antonio Carbone - GEORES - A. Carbone & A. Gallo Associated - Via M. Vernieri 119 - 84125 Salerno, Italy
Antonio Gallo - GEORES - A. Carbone & A. Gallo Associated - Via M. Vernieri 119 - 84125 Salerno, Italy
Keywords
Debris flow, hazard map, modelling
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