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Short-term decision making and long-term strategies : how to adapt to uncertain climate change : examples from the Thames estuary and the Dutch Rhine-Meuse delta
The rate of climate change and its consequences in the 21st century are very uncertain, and our insights are still developing. Adaptation is context driven instead of science driven, and focuses on the question: how vulnerable is a certain context, such as flood risk management, water supply, or the urban drainage, to climate change? In this paper two contexts are presented: the TE2100 project (started in 2002), in which a plan for climate resilient flood risk management for the Thames Estuary until 2100 was developed, and the policy development in the Netherlands on climate proofing the Dutch water management system (started in 2008) within the framework of the Delta Programme.
Using adaptation tipping points to prepare for climate change and sea level rise : a case study in the Netherlands
Assessment of the Netherlands' flood risk management policy under global change
We assessed whether, to what extent and when the Netherlands' current flood risk management policy may require a revision. The conclusion is that the current flood risk management policy in the Netherlands can be continued for centuries when the sea level rise rate does not exceed 1.5 m per century. However, we also conclude that the present policy may not be the most attractive strategy, as it has some obvious flaws.
Backfill grouting research at Groene Hart Tunnel
Measurements on back-fill grouting at Groene Hart Tunnel (GHT) are described and analysed.
A flume experiment on sediment transport with flexible, submerged vegetation
Vegetation affects sediment transport by obstructing the flow and changing the turbulence characteristics. Common sediment transport equations are not applicable to situations with submerged vegetation. A laboratory experiment was carried out in which flow, turbulence characteristics and sediment transport were measured in a 80 cm wide flume with a 15.85 m long section of 18 cm high, artificial, flexible, submerged vegetation in a sand bed. Measured profiles of velocity and turbulence were analysed and simulated with a 1DV numerical model to obtain estimates of the bed shear stress. Results show a reduction of the bed shear stress with about 80%, and an increase in sediment transport rate compared to a case without vegetation.
The distribution of macrozoobenthos in the Southern North Sea in relation tom meso-scale bedforms
Effects of wave diffraction and initial bathymetric conditions on beach fill volume change predictions
Phytoplankton modelling by means of optimization : a 10-year experience with BLOOM II
Modelling sand-mud morphodynamics in the Friesche Zeegat
Flood detention, nature development and water quality along the lowland river Sava, Croatia