نتایج جستجو برای: bed rivers
تعداد نتایج: 67553 فیلتر نتایج به سال:
abstract morphological river models are designed to provide physical insight into the morphological response and to assist river engineers and managers in the design, operation and maintenance of river systems. here deterministic modeling weak for a dynamic and stochastic of nature river environment. specially, these could not predict the exact shape of the river bed, specially e.g. for braided...
www.frontiersinecology.org © The Ecological Society of America R ecosystems are some of the most diverse on Earth and provide important services (Palmer and Richardson 2009; Strayer and Dudgeon 2010). Understanding how they function is critical to sustainable management but challenging given their complex spatial and temporal structure and multi-scale processes. Riverine systems comprise hydrol...
This study was conducted to investigate the relationship between body shape and environmental factors related to a rivarian ecosystem in Kura barbel (Barbus cyri) of the Sefidrud River basin. For this purpose, a number of 285 specimens were sampled from three rivers with different habitat properties including the Taleghan, Totkabon and Kloraz Rivers. The relationship between body shape (extract...
The application of “Modified Einstein Procedure” is recommended by the Specialized Committee on Sediment, Iranian Ministry of Energy. However, this method has not been applied to any river in the country. It is the purpose of this study to investigate the total sediment load of the Karun and Karkheh rivers at Ahwas and Hamidieh stations. The graphical calculations of the method are very complic...
Include a brief (<300 words) abstract, by itself, on p.2. Abstracts may not be published in the printed book but will be used in review and editing and may be used in web presentations of the book contents. Understanding and quantifying the co-evolution of migrating bed topography and flow turbulence is crucial for characterizing sediment transport in alluvial rivers. The self-organized bed for...
A great number of towns and villages are established along the rivers and especially on the terraces made by rivers. Under the influences of the river’s dynamic and discharge changes, these lands are constantly exposed to dangers such as the flood and instability of the river bed caused by the river meandering movements. Therefore, examining the meandering pattern of the rivers is necessary in ...
The application of “Modified Einstein Procedure” is recommended by the Specialized Committee on Sediment, Iranian Ministry of Energy. However, this method has not been applied to any river in the country. It is the purpose of this study to investigate the total sediment load of the Karun and Karkheh rivers at Ahwas and Hamidieh stations. The graphical calculations of the method are very complic...
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