Development Of The Prediction Method Of The
Sediment Yield From Fault Rocks
Author(s)
M. Papini & L. Longoni
Abstract
This paper deals with the definition of a methodology for the characterisation of
areas sensitive to mountain erosion. In order to assess the sediment yield of
catchments, in particular for alpine areas, the contribution of specific sediment
sources – the fault rocks – is evaluated. Previous studies show the importance of
fault rocks as potential sediment sources. There are many difficulties in defining
the fractured state of the rocks and so applying a physical method can be
impossible. This paper proposes a different approach. After numerous studies in
alpine areas rich in these rocks, it is believed that multi-criteria analysis is the
best way to define the characteristics of these zones and to enable the use of
available data. In such a context the sample areas studied show the advantages in
using a decision support system and not a physical method. In this field, only a
method requiring easily available data could provide results. Below, the decision
support system for evaluating fault rocks that have the most potential in
contributing to erosion and consequently sediment transport is described. This is
a first approach in order to then delve into the composite problem of sediment
yield. This method deals with the most important sediment sources to take into
account among these zones. The method is often better used in tandem with
existing ones in order to evaluate all the sediment sources and so to define total
sediment delivered from the slopes.
Keywords: decision support system, fault zones, multi-criteria analysis.
1 Introduction
One of the major problems regarding the management of catchments basins is
that of identifying the main productive areas that can generate problems
Keywords
decision support system, fault zones, multi-criteria analysis.
Related Book
Other papers in this volume
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