منابع مشابه
Catastrophic Collapse of Water Supply Reservoirs in Urban Areas
The paper presents a two-dimensional unsteady flow model based on the finite volume method combined with anapproximate Riemann solver to solve the governing equations on an unstructured triangular grid. A major feature of the model is that it isconservative, can deal with wetting and drying processes, resolve shocks and can handle complex geometry. The model is applied to acase stud...
متن کاملGlobal Storage-Reliability-Yield Relationships for Water Supply Reservoirs
Storage-Reliability-Yield (SRY) relationships are used to determine the reservoir storage capacity for delivery of a specified yield with a given reliability, or to compute the yield and/or reliability of an existing reservoir system. Several studies have developed generalized SRY relations using synthetic inflows arising from a variety of theoretical streamflow models. Fewer studies have used ...
متن کاملToxic Cyanobacteria in Four Brazilian Water Supply Reservoirs
Cyanobacterial blooms have become a worldwide concern due to the production of toxins harmful to humans and animals. In Brazil and worldwide, microcystins are the most frequently found cyanotoxin in water bodies. Four important reservoirs in Brazil’s Southeast and Northeast regions were sampled to identify the cyanobacteria community and the occurrence of potential toxin-producing species in th...
متن کاملFish assemblage responses to water withdrawals and water supply reservoirs in Piedmont streams.
Understanding effects of flow alteration on stream biota is essential to developing ecologically sustainable water supply strategies. We evaluated effects of altering flows via surface water withdrawals and instream reservoirs on stream fish assemblages, and compared effects with other hypothesized drivers of species richness and assemblage composition. We sampled fishes during three years in 2...
متن کاملCatastrophic Regime Shift in Water Reservoirs and São Paulo Water Supply Crisis
The relation between rainfall and water accumulated in reservoirs comprises nonlinear feedbacks. Here we show that they may generate alternative equilibrium regimes, one of high water-volume, the other of low water-volume. Reservoirs can be seen as socio-environmental systems at risk of regime shifts, characteristic of tipping point transitions. We analyze data from stored water, rainfall, and ...
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ژورنال
عنوان ژورنال: Nature
سال: 1913
ISSN: 0028-0836,1476-4687
DOI: 10.1038/091580b0