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Zawartość zarchiwizowana w dniu 2024-04-30

Dynamics of sediments and water in alpine catchments - processes and prediction

Cel

To achieve a better understanding of environmental hazards in the Alps. The project is concerned with the stability of slopes and torrent beds in the headwaters of steep Alpine catchments within the scope of integrated catchment studies. As erosion is caused mainly by surface and subsurface flow, results will be useful also for water resources modelling and conservation. Trends and effects of climate change form part of the study. Since the four experimental catchments are distributed in different parts of the Alps, possibilities of regionalisation of results will be investigated.

The task is divided into three work packages:
Field work is carried out in four experimental basins (Draix [Haute Provence], Erlenbach [Schwyz], Rio Cordon
[Regione Veneto] and Schmiedlaine [Bayern]) resulting in experimental data on sediment sources, mass
movements and the relation between river bed forms and coarse sediment transport by hydraulic processes. The
study of high risk areas on valley side slopes with mass movements, the dynamics of slope erosion in zero order-basins and the study on the distribution of sediment sources is directed to slope stability, whereas special
topics of investigations related to river bed stability are bedload transport characteristics in steep streams with
different bed morphology, single particle movement in relation to flood parameters and bed morphology,
development of indirect bedload measuring systems (hydrophones, radio pebbles, video recording systems) and
2D-effects of flow on transport and morphology dynamics.
Laboratory work will provide the physical basis for an 1D- and 2D-explanation of armouring processes and
related dynamics of step-pool systems. The use of magnetic tracers and video analysis for the study of coarse
sediment transport will be explored, an instrumented cobble (SPY) for the study of single particle movement
will be developed.
Modelling will combine results from laboratory and field work into models adapted for stability studies and for
prediction of effects and risks of climate change. Subtasks are the improvement of prediction formulas for
sediment load, evaluation of longterm climate data series on frequencies of major events and climate change
indicators, river bed level evolution in 2D-configurations, 2D-hydraulic modelling of unsteady flow in complex
geometry, multi particle simulation of clastic sediment transport, river bed stability with respect to gravel beds,
banks and vegetation and distributed hydraulic modelling for the analysis of runoff generation and activity of
sediment sources.

Dziedzina nauki

Program(-y)

Temat(-y)

Zaproszenie do składania wniosków

Data not available

System finansowania

CSC - Cost-sharing contracts

Koordynator

FREIE UNIVERSITAET BERLIN
Wkład UE
Brak danych
Adres
Malteserstrasse 74-100
12249 BERLIN
Niemcy

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Koszt całkowity
Brak danych

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Ostatnia aktualizacja: 8 Października 1998

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Permalink: https://cordis.europa.eu/project/id/ENV4960247/pl

European Union, 2024