نتایج جستجو برای: river and reservoir sedimentation

تعداد نتایج: 16858691  

2002
A. Marcano C. Castro E. Martinez

Caruachi Hydroelectric Project conforms together with Guri, Tocoma and, Macagua the Lower Caroni Hydroelectric Development. Second Stage of River Diversion at Caruachi included diverting the Caroni River through 18, 5.5 × 9m sluices in the spillway lower body that after being closed by gates permitted the reservoir filling. In order to define the precise timing for closure of the sluices and to...

Journal: :Earth Surface Processes and Landforms 2016

2003
Kwang-Seuk Jeong Dong-Kyun Kim Peter Whigham Gea-Jae Joo

Dynamics of a bloom-forming cyanobacteria (Microcystis aeruginosa ) in a eutrophic river /reservoir hybrid system were modelled using a genetic programming (GP) algorithm and multivariate linear regression (MLR). The lower Nakdong River has been influenced by cultural eutrophication since construction of an estuarine barrage in 1987. During 1994 /1998, the average concentrations of nutrients an...

2009
Renata J. ROMANOWICZ Adam KICZKO

The paper presents an application of a Stochastic Transfer Function (STF) approach and a State Dependent Parameter (SDP) transformation of model variables to the combined reservoir management and flow routing problem on the Upper Narew River, NE Poland. The management objective is to reach required flow conditions in the reaches of an ecologically valuable river. A 1-D distributed flow routing ...

ژورنال: علوم آب و خاک 1997
موسوی, سیدفرهاد, جلالیان, احمد, صمدی بروجنی, حسین , محمدزاده, احمد ,

One of the most vital problems in the storage and utilization of surface waters for drinking, flood control, hydropower, and agricultural purposes is that of sedimentation in reservoirs and subsequent decline of dam lifetime. The useful lifetime of a dam is defined as the time necessary for approximately 80% of the volume of its initial capacity to be filled by sediments washed in by water. It ...

  In this research we aimed to study the sedimentology of Jajrud River, upstream from Latian Dam. Initially, a field review was conducted to ascertain complete familiarity with the geographical and geological conditions of the proposed region. After determining the sampling location, the acquired samples were taken to the laboratory. From morphoscopic studies of the sediments, we have determ...

Journal: :Marine environmental research 2014
C Sheridan J M Baele A Kushmaro Y Fréjaville I Eeckhaut

Terrestrial runoff and sedimentation have been implicated in a variety of impacts on scleractinian corals. However, despite accumulating evidence, little work has been done to investigate their influence on coral disease development. This study examined the role that river runoff and the associated sedimentation could play in affecting the prevalence of the coral disease "white syndrome" in SW ...

ژورنال: سلامت و محیط زیست 2012
حسین زاده, ادریس, حسین زاده, سامان, روشنایی, قدرت ا..., شکوهی, رضا, علیپور, مهدی,

Background and Objectives: Aydughmush dam was built on Aydughmush River at 19km in southwest of Mianeh City. The dam is multipurpose and its main aims are the spring floods control, supplying potable water for villages and providing irrigation water. Different pollutants which probably discharge to the river finally enter to the dam reservoir so this study focuses on evaluating the quality of t...

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