نتایج جستجو برای: reservoir sedimentation
تعداد نتایج: 58971 فیلتر نتایج به سال:
I measured physico-chemical properties and phytoplankton in the small, shallow tropical reservoir of Oyun (Offa, Nigeria) between January 2002 and December 2003. I identified 25 phytoplankton genera in three sampling stations. Bacillariophyceae dominated (75.3%), followed by Chlorophyceae (12.2%), Cyanobacteria (11.1%) and Desmidiaceae (0.73%). The high amount of nutrients (e.g. nitrate, phosph...
In order to quantitatively evaluate the sediment yield in ungauged basins, it is necessary to use empirical models. The EPM model, as a model which is using in Iran, has sometimes been evaluated. Most evaluations have often been conducted by using river's sediment information and direct measurements of dam reservoir sedimentation have been less used, while the sediment measurement method on r...
In order to quantitatively evaluate the sediment yield in ungauged basins, it is necessary to use empirical models. The EPM model, as a model which is using in Iran, has sometimes been evaluated. Most evaluations have often been conducted by using river's sediment information and direct measurements of dam reservoir sedimentation have been less used, while the sediment measurement method on r...
Environmental 137Cs adsorbed on fine sediments has many uses as a tracer in erosion and sedimentation studies. The determination of sedimentation rates in lakes and reservoirs using 137Cs as a geochronological marker is described in detail. From a survey of literature sources it is shown that 137Cs levels in soils and sediments can be a powerful tool for the identification and quantification of...
Papers reviewed 1. C.A. Onstad and A.J. Bowie, Basin sediment yield modelling using hydrological variables. 2. T. Mizutani, Erosion processes in mountain basins in humid regions. 3. I. Bogardi, L. Duckstein, F. Szidarovszky andM. Fogel, Reservoir sedimentation under uncertainty: analytic approach versus simulation. 4. J.P. Bennett and CF. Nordin, Simulation of sediment transport and armouring (...
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