this study proposed a new discharge estimation method using a mean velocity formula derived from chiu’s 2d velocity formula of probabilistic entropy concept and the river bed shear stress of channel. in particular, we could calculate the mean velocity, which is hardly measurable in flooding natural rivers, in consideration of several factors reflecting basic hydraulic characteristics such as r...

Understanding bed load transport fluctuations in rivers is crucial for development of a transport theory and for choosing a sampling interval for “mean” transport rates. Field-scale studies lack sufficient resolution to statistically characterize these fluctuations, while laboratory experiments are limited in scale and hence cannot be directly compared to field cases. Here we use a natural-scal...

Changes in the width of channels or rivers that have three-dimensional pool-riffle can affect key parameters river engineering and flow resistance. Understanding effect changes on structures helps to control erosion sedimentation coarse-bed better design ecological restoration projects. The present study investigates sequential its interaction with bank narrowness turbulent characteristics. For...

Meandering is one of the unique processes in Earth surface dynamics. Since 1960s, fluvial geomorphologists have generalized numerous widely-acknowledged empirical or semi-empirical formulae to describe meandering rivers' characteristics. The most frequently applied Kinoshita high-sinuosity curve meander channel planform geometry. Combining with Beck equations riverbed topography at equilibrium ...

Where rivers enter the coastal zone, gradually varying non-uniform flow conditions develop in the channel. This section of the river is referred to as the backwater segment, and for large rivers, backwater flow extends many hundreds of kilometres upstream of the river outlet. Studies from the Mississippi River document a persistent backwater zone that influences sediment mobility throughout the...