NUMERICAL MODELLING OF THE DECEMBER 1999 CERVINARA FLOW-LIKE MASS MOVEMENTS (SOUTHERN 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 7 - Case Studies of Debris Flows NUMERICAL MODELLING OF THE DECEMBER 1999 CERVINARA FLOW-LIKE MASS MOVEMENTS (SOUTHERN ITALY)
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NUMERICAL MODELLING OF THE DECEMBER 1999 CERVINARA FLOW-LIKE MASS MOVEMENTS (SOUTHERN ITALY)



Abstract:
This paper deals with the flow-like mass movements which occurred on 15-16 December 1999 in Cervinara (Southern Italy). During this event, a huge amount of water, debris and boulders was transported from the hillslopes towards the piedmont areas causing victims, damage to buildings as well as the flooding of a large part of the urban area of the municipality. In this paper, a study is carried out with reference to the modelling of the propagation stage of the occurred phenomena which has yet to be satisfactorily addressed in current scientific literature. To this aim, the geological, geomorphological and geotechnical settings are firstly drawn up based on the available advanced data-set. Then, the event scenarios are reconstructed referring to rainfall data, information on damage and eyewitness accounts. It is highlighted that three mountain basins were affected by three debris floods and, three hours later, a huge debris flow occurred. For all the phenomena, the propagation areas are characterised and the rheology of the propagating masses assessed; subsequently, the numerical modelling of the propagation stage is carried out. For the numerical analyses, a commercial FLO-2D code is used and different scenarios are considered with reference to different digital elevation models, inflow hydrographs and rheological parameters. The results obtained for the propagation areas match either the in-situ evidence or the eyewitness accounts of the December 1999 events. Moreover, the role of the major factors is outlined for the propagation stage of the analysed phenomena. Finally, the possibility to extend the obtained results to other similar contexts is discussed.

Authors:
Leonardo Cascini - Università degli Studi di Salerno - Dipartimento di Ingegneria Civile - Via Ponte don Melillo - 84084 Fisciano (Italy)
Sabatino Cuomo - Università degli Studi di Salerno - Dipartimento di Ingegneria Civile - Via Ponte don Melillo - 84084 Fisciano (Italy)
Andrea De Santis - Università degli Studi di Salerno - Dipartimento di Ingegneria Civile - Via Ponte don Melillo - 84084 Fisciano (Italy)
Keywords
Modelling, landslides, flow-like, flood, propagation
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