Author(s): Mahendra B. Baniya; Takashi Asaeda; Senavirathna Mdh Jayasanka; K. C. Shivaram
Linked Author(s): Takashi Asaeda
Keywords: No Keywords
Abstract: Sediment yield is a complex phenomenon which is a result of weathering, land sliding, glacial and fluvial erosion and depending on catchment area, topography, the slope of the catchment terrain, rainfall, temperature and soil characteristics etc. Specific stream power (ω), bed shear stress (τ), flow velocity (v) and dimensionless Shields number (Θ) are key palaeohydraulic parameters associated with sediment transport in rivers, which are increasing with the river discharge, whereas the Shields number is inverse to the median bed material grain sizeThese parameters are numerically calculated from observed discharge and cross-section data of gauge station used to describe initiation of motion of sediment particles. The different power equations derived from clockwise annual hysteresis loops are used to estimate the annual suspended sediment load transported by the Kaligandaki river, at hydropower station, Mirmi, Syangja, Nepal.
Year: 2018