A great number of organic and inorganic substances pollute the water of the Rhine. The greatest concentration is formed by the chlorides, as their quantity exceeds that of the suiphates by about 50 per cent. At the German—Dutch frontier, the mean annual value of the chloride charge of the river amounts to approximately 350 kg/s C1. About 40 per cent, or 130 kg/s, of this quantity are residual s...

A great number of organic and inorganic substances pollute the water of the Rhine. The greatest concentration is formed by the chlorides, as their quantity exceeds that of the sulphates by about 50 per cent. At the Gerrnan-Dutch frontier, the rnean annual value of the chloride charge ofthe river amounts to approxirnately 350 kg/s Cl-. About 40 per cent, or 130 kg/s, oftbis quantity are residual...

Introduction Sea level rise, especially combined with possible changes in storm surges and increased river discharge resulting from climate change, poses a major threat for a low-lying delta like the Netherlands. Future flood protection strategies need to take these possible changes into account. Therefore, high-impact, low-probability climate change scenarios for the Netherlands were developed...

We have investigated the seasonal cycle of nutrients, chlorophyll a, dissolved organic nitrogen (DON), and dissolved and particulate organic carbon (DOC and POC) for 10 stations in the Belgian coastal zone. Special attention was given to phosphorus speciation, i.e. dissolved inorganic and organic phosphorus (DIP and DOP) and particulate inorganic and organic phosphorus (PIP and POP). Spatial an...

In this study, in vitro bioassays were performed to assess the ecotoxicological potential of sediments from Yangtze River estuary. The cytotoxicity and aryl hydrocarbon receptor (AhR)-mediated toxicity of sediment extracts with rainbow trout (Oncorhynchus mykiss) liver cells were determined by neutral red retention and 7-ethoxyresorufin-O-deethylase assays. The cytotoxicity and AhR-mediated act...

The tectonic and fluvial setting of the Rhine-Meuse river system in Lower Rhine Embayment rift is exceptionally well known. 19th century, pre-regulation courses three rivers are used to study a postulated sinuosity response faulting. fault-perpendicular Meuse River shows patterns changes at different spatial scales. large-scale (>5 km) related mainly faulting-induced subsurface lithology, deter...

In 1987, the curriculum of Environmental Sciences was introduced at Swiss Federal Institute of Technology Zurich ([Eidgenössische Technische Hochschule Zurich], ETHZ). The curriculum was motivated by demands and pressures that characterize our post-industrial age, particularly the necessity to understand complex environmental problems and assess their long term impacts from an interdisciplinary...

Abstract This study aims to reconstruct the historical spatiotemporal distribution of anadromous sturgeons, Acipenser sturio and A. oxyrinchus, in NW-Europe (especially Rhine, Meuse, Scheldt, Ems rivers, North Sea), light evaluating possibilities for their reintroduction. It is based on fisheries data from 14th–twentieth century, consisting > 5000 records sturgeon landings sales (c. 40,000 s...

This paper treats the filtering and parameter identification for the stochastic diffusion systems with unknown boundary conditions. The physical situation of the unknown boundary conditions can be found in many industrial problems,i.g., the salt concentration model of the river Rhine is a typical example . After formulating the diffusion systems by regarding the noisy observation data near the ...