نتایج جستجو برای: river and reservoir sedimentation

تعداد نتایج: 16858691  

Journal: :Japanese Journal of Limnology (Rikusuigaku Zasshi) 1977

ژورنال: علوم آب و خاک 2019

River discharge is among the influential factors on the operation of water resources systems and the design of hydraulic structures, such as dams; so the study of it is of great importance. Several effective factors on this non-linear phenomenon have caused the discharge to be assumed as being accidental. According to the basics the chaos theory, the seemingly random and chaotic systems have re...

2016
Yongqiang Zhou Erik Jeppesen Jingbao Li Yunlin Zhang Xinping Zhang Xichun Li

We studied the impacts of Three Gorges Reservoir (TGR) on the sedimentation regimes in the downstream-linked two largest Chinese freshwater lakes, Lake Dongting and Lake Poyang. Our results indicate that up to 1.73 × 109 t sediment was retained in TGR from June 2003 to December 2014. This resulted in a 145.9 × 106 t yr-1 decline in the suspended sediment load at Zhicheng and a 16.8 × 106 t yr-1...

Journal: :Journal of the Civil Engineering Forum 2016

Journal: :Lake and Reservoir Management 1988

2003
R. BARRY NEHRING KEVIN G. THOMPSON DAVID L. SHULER

—Studies of the whirling disease epizootic in the upper Colorado River drainage have suggested that Windy Gap Reservoir is a source of the fish-infective actinospore of Myxobolus cerebralis. We divided the reservoir into four quadrants (12 zones) and conducted a core-sampling study to determine the spatial dynamics of actinospore production within the reservoir from late June to early November ...

Journal: :Applied sciences 2023

The Hanjiang River is the second-largest river in Guangdong Province, China. modern sedimentation pattern of subaqueous delta has been significantly affected by changes sediment delivered River. Based on multiperiod charts and columnar samples from delta, influence a sharp decrease flux deposition past 60 years was studied through combination chart-based analysis evolution erosion samples. resu...

Journal: :international journal of advanced biological and biomedical research 2014
mohsen norouzi

hydro-induction sediment discharge technique (hsdt) aims to prevent reservoir sedimentation by withdrawing the discharge water from the reservoir bottom to suck up and discharge sediments, and by inducing vertical vortexes and undercurrents in the reservoir bay to keep sediments agitated and moving. the technique is facilitated with an innovative discharge conduit system having bottom intakes t...

Journal: :جغرافیا و مخاطرات محیطی 0
فاضل ایران منش مهران مقصودی ابراهیم مقیمی مجتبی یمانی امیرحسین چرخابی

1. introduction one of the main characteristics of azadegan plain in the west of khuzestan province is active instability of geomorphic features of karkheh river this instability caused extensive variations in the sedimentary setup in the western parts of this plain, such as buried and abandoned river beds, which are repeated over time. therefore, these variations should be studied in more deta...

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