Environmental risk of dissolved oxygen depletion of diverted flood waters in river polder systems – A quasi-2D flood modelling approach
نویسندگان
چکیده
منابع مشابه
An analysis of hydraulic, environmental and economic impacts of flood polder management at the Elbe River
The paper presents research results on flood risk mitigation by the controlled flooding of a retention area on the middle reaches of the Elbe River. The retention area consists of six large polders and the floodplain of a tributary, the Havel, and is located near the Havel’s confluence with the Elbe River. The total retention volume of both the polders and the Havel floodplain amounts to approx...
متن کاملFlood Risk and River Basin Management
The aim of this study is to identify the sources of uncertainty that induce the largest uncertainties in the model outcomes and quantify this uncertainty using expert elicitation. Analysis of expert opinions showed that the Qh-relation and the roughness predictor of the main channel cause the largest uncertainties for design water level computations. For effect studies, the floodplain topograph...
متن کاملFlood Risk and River Basin Management
Recent scenario studies on water management focus on one or two projection years and the effects on the water system and functions. The future is however more complex and dynamic. Therefore, we analyse transient scenarios in order to evaluate the performance of water management strategies. Current available simulation tools are not suitable for this purpose. Therefore, we have developed and use...
متن کاملNumerical modelling of dissolved-oxygen in a cold- region river
Dissolved oxygen (DO) content is a critical measure of the ability of water bodies to support healthy aquatic ecosystems. To better understand DO behaviour in large cold-region rivers, a onedimensional water quality model is setup for a ~200 km reach of the lower Athabasca River below Fort McMurray, Alberta using the Mike-11 modelling system. A river-ice model is applied to reproduce ice condit...
متن کامل210Pb geochronology of flood events in large tropical river systems.
Floodplain sedimentation removes particles from fluvial transport and constructs stratigraphic records of flooding, biogeochemical sequestration and other aspects of the environmental history of river basins-insight that is enhanced by accurate geochronology. The natural fallout radionuclide (210)Pb, often employed to date lacustrine and marine sediments, has previously been used to determine f...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Science of The Total Environment
سال: 2009
ISSN: 0048-9697
DOI: 10.1016/j.scitotenv.2008.11.024