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Simulating the influences of groundwater on regional geomorphology using a distributed, dynamic, landscape evolution modelling platform

Barkwith, Andrew; Hurst, Martin D.; Jackson, Christopher R.; Wang, Lei; Ellis, Michael A.; Coulthard, Tom J.. 2015 Simulating the influences of groundwater on regional geomorphology using a distributed, dynamic, landscape evolution modelling platform. Environmental Modelling and Software, 74. 1-20. 10.1016/j.envsoft.2015.09.001

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Abstract/Summary

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.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1016/j.envsoft.2015.09.001
Additional Keywords: GroundwaterBGS, Groundwater, Groundwater modelling
Date made live: 23 Sep 2015 07:34 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/511782

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