نتایج جستجو برای: sediment discharge
تعداد نتایج: 136480 فیلتر نتایج به سال:
One of the most important processes of erosion and sediment transport in streams is the river most complex engineering issues.this process special effects on water quality indices, action suburbs floor and destroyed much damage to the river and also into the development plans Lack of continuity sediment sampling and measurement of many existing stations. due to the low number of hydrometric s...
Aims & Backgrounds: Today, soil erosion and sediment production are considered a danger to humans and their lives, so in areas where soil erosion is not controlled, soils gradually erode and lose their fertility. The aim of this study is to model the relationship between the amount of suspended sediment load and the geomorphic features of the Nirchai River Basin. Methodology: In this study, GIS...
Index words: Reservoir sedimentation Pb-210 dating Sediment retention Cs-137 dating The singlemost important factor affecting the longevity of US dams is sedimentation, reducing and perhaps eliminating the reservoir capacity for future sediment storage and floodwave attenuation. A better understanding of the sedimentation rates and sediment dynamics is required for a better management of these ...
abstract lateral intake is a hydraulic structure which is used for diversion of some portion of water from a river for the purpose of irrigation, storage and industrial. most of lateral intakes from canal are installed at canal with inclined banks which has not received the attention of the researchers in the past. since the flow discharge and sediment which enters the intake canal depends on t...
An increasing number of studies have emphasized the need to bridge the disciplines of ecology and geomorphology. A large number of case studies show that organisms can affect erosion, but a comprehensive understanding of biological impacts on sediment transport conditions is still lacking. We use meta-analysis to synthesize published data to quantify the effects of the abundance, body size, and...
Sediment rating curve (SRC) is a conventional and a common regression model in estimating suspended sediment load (SSL) of flow discharge. However, in most cases the data log-transformation in SRC models causing a bias which underestimates SSL prediction. In this study, using the daily stream flow and suspended sediment load data from Shalman hydrometric station on Shalmanroud River, Guilan Pro...
Sediment transport is one of the important indicators of rivers in natural conditions, which is affected by the change in geometric and flow characteristics, and is reflected in the alignment or sedimentation of different river routes. Therefore, providing suitable solutions for sediment control and fixing the longitudinal slope of the substrate and preventing sediment transport from upstre...
By contrast with other historical outburst floods on SkeiTarársandur, the 1996 jökulhlaup was unprecedented in its magnitude and duration, attaining a peak discharge of f53,000 m/s in <17 h. Using a combination of field sampling and remote sensing techniques (Landsat TM, SAR interferometry, airphotos, and laser altimetry), we document the sandur-wide geomorphic impacts of this event. These impa...
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