Download Advances in Water Resources Engineering by Chih Ted Yang, Lawrence K. Wang PDF

By Chih Ted Yang, Lawrence K. Wang

This booklet, Advances in Water assets Engineering, quantity 14, covers the themes on watershed sediment dynamics and modeling, built-in simulation of interactive floor water and groundwater structures, river channel stabilization with submerged vanes, non-equilibrium sediment delivery, reservoir sedimentation, and fluvial strategies, minimal strength dissipation fee concept and functions, hydraulic modeling improvement and alertness, geophysical tools for evaluate of earthen dams, soil erosion on upland parts by way of rainfall and overland circulation, geofluvial modeling methodologies and purposes, and environmental water engineering glossary.

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The grade number is equal to its tributary grade and the position number increases from zero near the outlet to the upstream one by one [34]. 3 Parameter Acquisition The parameters of the DYRIM, including the geometrical parameters and the underlying surface parameters, are all spatially distributed. , vegetation cover, land use, soil type, and potential evaporation) are acquired from RS images in the format of raster data. To make the raster data match the hillslope-channel units, the central point or the polygon border of each hillslope-channel unit is used to capture the point values of the raster data [6], and the values are then counted and transformed into corresponding parameters.

Hillslope The sloping side of a hill. Hydrological station An agency that observes and studies the hydrologic conditions of bodies of water and territories. Hyperconcentrated flow A two-phase flowing mixture of water and sediment in a channel, which has properties intermediate between fluvial flow and debris flow. Leaf area index A dimensionless quantity that characterizes plant canopies. Meteorological station A facility, either on land or sea, with instruments and equipment for measuring atmospheric conditions to provide information for weather forecasts and to study the weather and climate.

Wang et al. 60 NSE Nash–Sutcliffe coefficient of efficiency With the simulation results of hillslope runoff, soil erosion on hillslopes, gravitational erosion in gullies, and nonequilibrium sediment transport in channels are further simulated by using the DYRIM. 2. 5. 16) also indicate that the simulated and observed sediment discharges are in the same order of magnitude. 17. Overall, the simulation results reflected the soil erosion process with acceptable precision. However, distributed simulation of rain-runoff is difficult in arid and semiarid areas due to remarkable variations of infiltration rate and soil moisture.

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