A New Method For Debris-flow Hazard Assessment In Alluvial Fans
Author(s)
C. Ceccarelli, F. Napolitano & F. Savi
Abstract
A new method for debris-flow hazard
assessment in alluvial fans
C. Ceccarelli, F. Napolitano & F. Savi
Department of Hydraulics,
Transportation and Highways, University of Rome "La Sapienza "
Abstract
A new method to identify the probability of an area in an alluvial fan being
flooded is proposed. This method takes into account in a simplified way the
propagation of debris flow in the main channel, evaluate the outflowing
discharge and the spreading of the outflow in the alluvial fan.
The method is applied to identify the zones with the same probability to be
flooded in the alluvial fan of Gianico, located on Italian Alps in Northen Italy. It
allows to take into account the uncertainties in the estimation of the model
parameters and the effects of these uncertainties in the extension of the riskprone
areas are discussed.
1 Introduction
Flood damages D are usually defined ([I], [2], [3]) as
where L is the value of the risk prone structures, normally expressed in monetary
values, and V is the
Keywords
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