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

Barkwith, A., Hurst, M. D. , Jackson, C. R., Wang, L., Ellis, M. A. and Coulthard, T. J. (2015) Simulating the influences of groundwater on regional geomorphology using a distributed, dynamic, landscape evolution modelling platform. Environmental Modelling and Software, 74, pp. 1-20. (doi:10.1016/j.envsoft.2015.09.001)

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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

Item Type:Articles
Keywords:Cellular automata, sediment transport, groundwater, landscape evolution, CAESAR-lisflood, CLiDE.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Hurst, Dr Martin
Authors: Barkwith, A., Hurst, M. D., Jackson, C. R., Wang, L., Ellis, M. A., and Coulthard, T. J.
Subjects:G Geography. Anthropology. Recreation > G Geography (General)
G Geography. Anthropology. Recreation > GA Mathematical geography. Cartography
G Geography. Anthropology. Recreation > GB Physical geography
Q Science > QE Geology
College/School:College of Science and Engineering > School of Geographical and Earth Sciences
Journal Name:Environmental Modelling and Software
Publisher:Elsevier
ISSN:1364-8152
Published Online:15 September 2015
Copyright Holders:Copyright © 2015 NERC as represented by BGS
First Published:First published in Environmental Modelling and Software 74: 1-20
Publisher Policy:Reproduced under a Creative Commons License

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