The Hydraulics of River Ice

Cold‐regions river flow observed from space

[1] Knowledge of water‐surface velocities in rivers is useful for understanding a wide range of lotic processes and systems, such as water and ice fluxes and forces, mixing, solute and sediment transport, bed and bank stability, aquatic and riparian ecology, and extreme hydrologic events. In cold regions, river‐ice break up and the associated downstream transport of ice debris is often the most...

A New Unusual Ice-induced Sedimentary Structure: the Silt Mushroom

Upon channel bars or point bars within the lows of the Yellow River, a new sedimentary structure, named 'silt mushroom', has been observed. The process of their formation is interpreted to be via the ice process. The name, the silt mushroom comes from their figurative form. This is because they look somewhat similar to mushroom's in size and shape; being in the range of 1 to 10 cm in diameter, ...

Asymptotic derivation of the section-averaged shallow water equations for natural river hydraulics

Analysis of Gravel River Beds using Three-Dimensional Laser Scanning

The size and shape of the stones in dry gravel river beds are of interest in geology and river hydraulics. The topography of a bed surface can be measured by three-dimensional laser scanning. A method is described for fitting ellipsoids to the surfaces of individual stones to estimate their size, shape and orientation in the river bed. Different cost functions are evaluated and the methods are ...

Critical appraisal of various techniques used for flow modeling in non- prismaticcompound open channel flow

Each river in the world is unique. Some are gently curve, others meander, and some others are relatively straight and skewed. The size of river geometry also changes from section to section longitudinally due to different hydraulic and surface conditions called non -prismatic channel. Much works done on river hydraulics are found to bed non prismatic compound channels. There has also been signi...