1. Simulating the influences of groundwater on regional geomorphology using a distributed, dynamic, landscape evolution modelling platform.
- Author
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Barkwith, Andrew, Hurst, Martin D., Jackson, Christopher R., Wang, Lei, Ellis, Michael A., and Coulthard, Tom J.
- Subjects
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GEOMORPHOLOGY , *GROUNDWATER analysis , *LANDSCAPES , *HYDROLOGY , *ENVIRONMENTAL impact analysis , *CELLULAR automata - Abstract
A dynamic landscape evolution modelling platform (CLiDE) is presented that allows a variety of Earth system interactions to be explored under differing environmental forcing factors. Representation of distributed surface and subsurface hydrology within CLiDE is suited to simulation at sub-annual to centennial time-scales. In this study the hydrological components of CLiDE are evaluated against analytical solutions and recorded datasets. The impact of differing groundwater regimes on sediment discharge is examined for a simple, idealised catchment, Sediment discharge is found to be a function of the evolving catchment morphology. Application of CLiDE to the upper Eden Valley catchment, UK, suggests the addition of baseflow-return from groundwater into the fluvial system modifies the total catchment sediment discharge and the spatio-temporal distribution of sediment fluxes during storm events. The occurrence of a storm following a period of appreciable antecedent rainfall is found to increase simulated sediment fluxes. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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