IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 3: Water and Carbon: Climate Change Impact : Investigating the impact of contaminated sediments in an integrated approach
Investigating the impact of contaminated sediments in an integrated approach
Author : C. Cofalla
Hydrodynamic events (e.g. flood, dredging) are accompanied by re-suspension of fine sediments. Studies showed an increasing frequency and intensity of floods due to climate change. Hence an increasing erosion of sediments is estimated. Moreover, contaminants like heavy metals or persistent organic substances often adhere to fine sediments. In order to protect waters and aquatic organisms from contaminated sediments, it is necessary to improve the knowledge concerning transport and bioavailability. In an interdisciplinary experimental research approach both, hydraulic engineers and ecotoxicologists, investigate the impact of re-suspended contaminated cohesive sediments. A layer of sediment was built into an annular flume and re-suspended generating sufficient bottom shear stress. Meanwhile, rainbow trouts were exposed to the sediment and contaminants, respectively. During the tests various parameters are measured to observe the environment in the experiment. The characterization of the sediment behaviour and the analysis of biomarkers help to assess the ecotoxicological risk of hydrodynamic events.
File Size : 919,845 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 3: Water and Carbon: Climate Change Impact
Date Published : 01/07/2011
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