SEDYN-X - Interdisziplinäre Untersuchung von Sedimentströmen
Abstract
Sediment transport in river systems is a recurrent problem for geomorphological sediment flux studies, natural hazard assessment, river ecology and river engineering. While each discipline has developed its own tools and models of sediment budget evaluation, complex issues of sediment management might be better served by an interdisciplinary cooperation between them. In our proposed project we aim at establishing a close teamwork between geomorphology (Institute of Geography and Regional Science, Karl-Franzens University, Graz) and river engineering (Institute of Water Management, Hydrology and Hydraulic Engineering, University of Natural Resources and Life Sciences (BOKU), Vienna) to work out sediment management strategies in the Johnsbachtal catchment, Nationalpark Gesäuse. In this area, costly renaturation measures were carried out; however, their positive effects are endangered by a too low sediment supply. The Sedyn-X project will investigate the Johnsbachtal sediment budget in an integrative way, including (1) geomorphic mapping and ALS evaluation to derive a conceptual model of the sediment cascade, (2) quantifying important geomorphic processes using repeated TLS surveys and further techniques, and assessing the volume of sediment storage in the system, (3) quantifying transport in the river system using different techniques of bedload sampling and (4), working out possible measures and future sediment management strategies, also under the viewpoint of ongoing climate change. Work packages 1 and 2 will be mainly carried out by the geographers and no. 3 mainly by river engineers (even if the work packages are interlocked), while the management strategies can only be worked out in close cooperation and under consideration of local expert knowledge. By our novel interdisciplinary approach we want to work out strategies for future river management in the study area considering the divergent interests of local actors like National Park authorities, hydro power stations and road maintenance authorities; but also deliver guidelines for similar problems in other regions.
Publikationen
Project staff
Helmut Habersack
Univ.Prof. Dipl.-Ing. Dr.nat.techn. Dr.h.c. Helmut Habersack
helmut.habersack@boku.ac.at
Tel: +43 1 47654-81901, 81911
BOKU Project Leader
15.05.2012 - 31.05.2015