منابع مشابه
Dispersion in the Surfzone: Tracer Dispersion Studies
Terrestrial runoff and river input dominates urban pollutant loading rates Often draining directly into the surfzone, this pollution degrades surfzone water quality, leading to beach closures (e.g., Boehm et al., 2002), increases health risks (e.g., diarrhea and upper respiratory illness) (Haile et al., 1999), and contains both human viruses (Jiang and Chu, 2004) and elevated levels of fecal in...
متن کاملevaluate effect of soil texture and transport length on conservative tracer dispersion rate using solute transport models
determination of the best method to estimate the dispersion rate is very important to ensure accuracy of the computed data. the aim of this research is studying of transport length effects of dispersion of conservative tracer nacl in soils with different texture using several solute transport models including brigham, fried-combernous and solutions of the advection-dispersion equation with inve...
متن کاملExponential Formula for Bedload Transport
An exponential formula that does not involve the concept of the critical shear stress is derived in this study for computing bedload transport rates. The formula represents well various experimental data sets ranging from the weak transport to high shear conditions. Comparisons of the present study are also made with many previous bedload formulas commonly cited in the literature.
متن کاملAnalysis of bedload transport in laminar flows
Bedload transport generally depends on the bed shear stress and Reynolds number. Many studies conducted for the condition of turbulent flows have revealed the dependence of the transport rate on the bed shear stress, while knowledge of the Reynolds number effect on the transport rate is very limited. As an extreme case to reflect the viscous effect on sediment transport, sediment transport in l...
متن کاملTracer Dispersion in Rough Open Cracks
Tracer dispersion is studied in an open crack where the two rough crack faces have been translated with respect to each other. The different dispersion regimes encountered in rough-wall Hele-Shaw cell are first introduced, and the geometric dispersion regime in the case of self-affine crack surfaces is treated in detail through perturbation analysis. It is shown that a line of tracer is progres...
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ژورنال
عنوان ژورنال: Advances in Geosciences
سال: 2013
ISSN: 1680-7359
DOI: 10.5194/adgeo-37-1-2013