Download Advances in Water Resources Engineering by Chih Ted Yang, Lawrence K. Wang PDF
By Chih Ted Yang, Lawrence K. Wang
This ebook, Advances in Water assets Engineering, quantity 14, covers the subjects 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 approaches, minimal strength dissipation fee thought and functions, hydraulic modeling improvement and alertness, geophysical equipment for evaluation of earthen dams, soil erosion on upland components via rainfall and overland circulation, geofluvial modeling methodologies and functions, and environmental water engineering glossary.
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11) where k coefficient related to the erodibility of the surface soil Θx the Shields parameter denoting the strength of flow at the position x β the the index related to the eroding efficiency of the runoff. According to the study of sediment incipient motion in river channels , the value of the index β can be determined by the fluid and sediment characteristics. However, microtopography has a significant impact on the convergence of flow on the hillslope surface. , in rills, can erode more particles than a sheet flow.
25. In general, the simulated sediment runoff had the same order of magnitude as the field data, and the simulated daily sediment load matched the trend of the field processes. Nevertheless, there were still discrepancies between the simulated values and the observed ones based on the available data. Three possible reasons are proposed 36 G. Wang et al. Fig. 80 Fig. 25 Flow discharge and sediment load at Longmen station in 1977  1 Watershed Sediment Dynamics and Modeling 37 here. First, it is somewhat difficult to calibrate and verify the distributed parameters for such a large watershed.
22. 7. Overall, the simulation results during the period of model validation seemed to be a little worse than those during the period of model calibration. However, they still clearly reflected the soil erosion process at the Zichang station, which further proved the validity and practicability of the DYRIM. 3 Application in the Coarse Sediment Source Area The highest annual sediment yield in the recorded history of the Loess Plateau occurred in 1967 in the coarse sediment source area. 39 × 109 t.