Research Developments In Debris Flow
Monitoring, Modelling And Hazard Assessment
In Italian Mountain Catchments
Author(s)
M. A. Lenzi
Abstract
Debris flows play an important role among natural hazards in the mountainous
areas of Italy. This paper provides an overview of the recent research on debris
flows conducted in Italy, taking into account both hydraulic and morphological
studies. Moreover, the most encouraging research perspectives in this field are
briefly presented, such as the monitoring in instrumented basins, the
geotechnical analysis of the processes leading to debris flow initiation and
modelling. Finally, three study cases are reported, with the aim of outlining the
main characteristics of these phenomena and the consequent risk conditions in
representative sites in the Italian mountains.
Keywords: Italy, debris flow, monitoring, natural hazards, modelling.
1 Introduction
Italy is a peninsula in southern Europe, whose territory covers 301,277 km 2 and
of which 75% consists of mountainous or hilly areas. Relief is high and
differentiated: peaks on the Alps (Northern Italy) range between 2,700 and 4,800
m a.s.l., while on the Apennines (Central and Southern Italy), they vary between
2,000 and 2,800 m a.s.l. The Po River is the longest water course (652 km) and it
crosses Northern Italy in an E-W direction, draining a basin of about 70,000 km 2
Its average annual runoff is about 660 mm; higher peak discharges reach values
of about 10,000 m 3 s -1 [1]. The Alps originated by compression and
foreshortening of the margins between Africa and Europe. This processes of
crustal shortening, which began in the late Mesozoic era (Upper Cretaceous) and
continues up to the present, has led to the formation of thrust nappes of the
crystalline basement and of its sedimentary cover complexes (carbonates, marls
Keywords
Italy, debris flow, monitoring, natural hazards, modelling.
Related Book
Other papers in this volume
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