IAHR Document Library

« Back to Library Homepage « Proceedings of the 12th International Symposium on Ecohydrau...

Palaeohydraulic Parameters for Initiation Sediment Transport in Kaligandaki River, Nepal

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

Copyright © 2024 International Association for Hydro-Environment Engineering and Research. All rights reserved. | Terms and Conditions