IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 3: Water and Carbon: Climate Change Impact : Coupled surface water/groundwater model for hyporheic flow in a pool and riffle sequence
Coupled surface water/groundwater model for hyporheic flow in a pool and riffle sequence
Author : A.A. Ibrahim1 and P.M. Steffler2
The hyporheic zone in pool and riffle sequences is recognized to be important for fish spawning as well as surface water/groundwater interactions. In this study, steady state water surface elevations are calculated and the groundwater flow is then modeled by using either a simple onedimensional (1D) Dupuit approach or a two-dimensional (2D) horizontal/vertical model in boundary fitted coordinates. The model calculates the seepage flow rates, upwelling/downwelling discharges and the hyporheic flow. The results show that the maximum error between the (2D) and (1D) models in calculating the horizontal seepage discharge is less than 24% for stratum thickness up to 4.0 m while the maximum error in calculating the upwelling/downwelling discharges is less than 20% for Stratum thickness up to 1.0 m. This error decreases with increasing surface water discharge and/or decreasing average stratum thickness.
File Size : 374,057 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 3: Water and Carbon: Climate Change Impact
Date Published : 01/07/2011
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