نتایج جستجو برای: fine sediment load

تعداد نتایج: 290264  

2016
Fred C. Dobbs Teresa A. Scholly

Pectinaria (Lagis) koreni (Malmgren) is an abundant, deposit-feeding, infaunal inhabitant of shallow-water marine environments in northern Europe. Laboratory experiments were performed to quantify the polychaete's sediment processing in 2 distinct sediments, 1 fine-grained and high in combustibles, the other coarse-grained and low in combustibles. Gut passage time and time to pseudodefecation w...

Journal: :Coastal Engineering Proceedings 1978

Journal: :نشریه مهندسی عمران و نقشه برداری 0
امیدرضا صفی یاری دانشگاه تهران محمدعلی بنی هاشمی دانشگاه تهران

in this research, using an expansive channel in plan and along the longitudinal profile, deltaic reservoir sedimentation was studied. sedimentation in bed load governed conditions and delta formation in reservoir environment is a function of various parameters such as: geometrical shape of reservoir, bottom slope, hydrological properties and hydraulic conditions of inflowing stream, sediment lo...

2003
C. P. Holliday Todd C. Rasmussen William P. Miller

This laboratory work examines the relationship between turbidity (NTU) and total suspended sediment concentration (TSS, mg/L) for a Cecil Ap soil, a common Southeastern Piedmont soil type. We show a 1:1 correlation between NTU and TSS for the silt and clay fractions, but a smaller ratio for clay and bulk-soil samples. These results suggest that NTU measurements can be used to estimate sediment ...

2016
Tobias Schruff Florian Schornbaum Christian Godenschwager Ulrich Rüde Roy M. Frings Holger Schüttrumpf T. SCHRUFF

The riverbed embodies an important ecotone for many organisms. It is also an interface between groundwater and surface water, two systems that feature numerous distinctions. The riverbed therefore exhibits many physical and biochemical gradients e.g. flow velocity, temperature, oxygen or nutrient concentration. If the riverbed however becomes clogged through input and deposition of fine sedimen...

In this research, the element free Galerkin is implemented to simulate the bed-load sediment transport equations in two dimensions. In this method, which is a meshless method, the computational domain is discretized by a set of arbitrarily scattered nodes and there is no need to use meshes, elements or any other connectivity information in nodes. The hydrodynamical part of sediment transport eq...

2002
Michael K. Young Thomas A. Wesche Wayne A. Hubert MICHAEL K. YOUNG A. WESCHE

-To measure the changes in substrate composition produced by spawning brook trout Salvefinus fontinalis, we collected 187 freeze-core samples, both before and after spawning, from egg pockets, inside redds but excluding egg pockets, and outside redds. In the upper strata of reddassociated samples, we found that the proportions of particles 0.85-1.70,0.425-0.85,0.2 12-0.425, and less than 0.212 ...

2006
Momcilo Markus

Water resources managers always are searching for cost-effective monitoring programs that provide maximum information for minimum cost. Monitoring of sediment discharges from streams and rivers is one of the expensive efforts that is always reduced or cut when financial resources are limited. This has resulted in a very limited number of long-term sediment monitoring sites in the United States....

2009
Benoı̂t Camenen Magnus Larson

CAMENEN, B. and LARSON, M., 2008. A general formula for noncohesive suspended sediment transport. Journal of Coastal Research, 24(3), 615–627. West Palm Beach (Florida), ISSN 0749-0208. A simple and robust suspended load transport formula for noncohesive sediment is presented for application to river, estuarine, and coastal environments with the use of depth-averaged models. The formula is base...

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