How can you manage and design rivers such that no floods occur, whilst still ensuring navigation for shipping and a continuation of the agricultural, ecological and recreational functions? Dutch researcher Saskia van Vuren discovered that uncertainties in the behaviour of the riverbed play an important role in predicting the effects of design measures, such as lowering floodplains.
In view of future large-scale projects, such as river improvement measures in the project Ruimte voor de rivier [Room for the River], the societal relevance of responsible river management is increasing. The large-scale spatial redesigning of the Rhine Branches could result in greater dynamics in the riverbed, which could give rise to more problems for shipping. That might lead to increasing costs for maintenance dredging. Moreover an increase in the riverbed dynamics might also affect the high-water levels. Saskia van Vuren investigated the uncertainty in riverbed dynamics.
Changes in the riverbed elevation can give rise to high-water problems and flooding, drought problems which hinder shipping, problems with respect to the discharge distribution at bifurcation points, and erosion problems. Fluctuations in the groundwater level caused by these so-called morphological changes can exert an influence on the local ecology and agriculture. In her thesis, Van Vuren uses examples to illustrate how insights into the uncertain behaviour of the riverbed can support managers in the design, management and maintenance of the river.
Saskia van Vuren M.Sc. | alfa
Waste in the water – New purification techniques for healthier aquatic ecosystems
24.07.2018 | Eberhard Karls Universität Tübingen
Plenty of habitat for bears in Europe
24.07.2018 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig
There are currently great hopes for solid-state batteries. They contain no liquid parts that could leak or catch fire. For this reason, they do not require cooling and are considered to be much safer, more reliable, and longer lasting than traditional lithium-ion batteries. Jülich scientists have now introduced a new concept that allows currents up to ten times greater during charging and discharging than previously described in the literature. The improvement was achieved by a “clever” choice of materials with a focus on consistently good compatibility. All components were made from phosphate compounds, which are well matched both chemically and mechanically.
The low current is considered one of the biggest hurdles in the development of solid-state batteries. It is the reason why the batteries take a relatively long...
New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference
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Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
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20.08.2018 | Information Technology