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Project 5.01: Climate Projections for Sediment Budgets and Risks due to Cohesive Sediments

Dr Thorsten Pohlert, BfG,
pohlert@bafg.de

Dr Vera Breitung, BfG,
breitung@bafg.de

Dr Gudrun Hillebrand, BfG,
Department M3 - Groundwater, Geology, River Morphology
Tel. +49 (0) 261 1306 5425, hillebrand@bafg.de

Objectives

The interactions between interventions in the sediment balance and pollutant load of the sediments have not yet been fully understood and described. Understanding these interactions is, however, the basis for effective monitoring strategies for polluted sediments and their potential for remobilisation.
Proposals for measures for risk-oriented, sustainable management of sediments and dredged material therefore require an improved knowledge of the processes on the river catchment scale.

The changes in sediment budget and sediment quality derived from dependable climate and discharge projections will be examined with regard to their consequences for maintenance of federal waterways and their impact on the environment. Furthermore, the impact of reservoir flushing in Alpine regions of the River Rhine and modified dredging strategies along the chain of impoundments of the Upper Rhine will be investigated.

The objective is to study the climate-induced changes regarding aspects of quantity and the related issues of quality in sediment management. Management strategies adapted to the new climatic conditions should ensure a balanced sediment budget and a high sediment quality in the long term. A further objective is to provide the German Waterways and Shipping Administration (WSV) with reliable information on the input of contaminated sediments from the inland region into tidal and coastal waters that is related to changes in the headwater discharge.

The areas of consideration are the Upper Rhine and the Middle Elbe.

Publications

Pohlert, T., Hillebrand, G., Breitung, V. (2011): Effects of sampling techniques on physical parameters and concentrations of selected persistent organic pollutants in suspended matter. Journal of Environmental Monitoring. doi:10.1039/C1EM10045A.

Pohlert, T., Hillebrand, G., Breitung, V. (2011): Trends of persistent organic pollutants in the suspended matter of the River Rhine. Hydrological Processes. doi:10.1002/hyp.8110

Pohlert, T., Hillebrand, G., Breitung, V. (2011): Sedimenterkundung Oberrhein – Erkundung und Untersuchung von Sedimentationsbereichen auf Hexachlorbenzol und Polychlorierte Biphenyle zwischen Weil und Straßburg. BFG-Bericht Nr. 1717.

Hillebrand, G., Olsen, N. R. B. (2011): Towards modeling consolidation of fine sediments upstream of the Iffezheim barrage, Upper Rhine River, Germany. The 7th IAHR Symposium on River, Coastal and Estuarine Morphodynamics, 6.-8. Sept. 2011, Peking, China. Beitrag im Tagungsband.

Klassen, I., Hillebrand, G., Olsen, N. R. B., Vollmer, S., Lehmann, B., Nestmann, F. (2011): Modeling fine sediment aggregation processes considering varying fractal dimensions. The 7th IAHR Symposium on River, Coastal and Estuarine Morphodynamics, 6.-8. Sept. 2011, Peking, China. Beitrag im Tagungsband.

Breitung, V. (2010): Risiko durch Mobilisierung und Transport schadstoffbelasteter Altsedimente. BfG-Veranstaltungen Band 04/2010.

Hillebrand, G., Pohlert, T., Klassen, I., Breitung, V., Vollmer, S. (2010): Impact of projected climate change on transport of cohesive sediments and particle-bound contaminants in the impounded section of the Upper Rhine River. HydroPredict’2010 – International Interdisciplinary Conference on Predictions for Hydrology, Ecology and Water Resources Management, Changes and Hazards caused by Direct Human Interventions and Climate Change, 20.-23. September 2010 in Prag. Beitrag im Tagungsband.

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