Modelling differential catchment response to environmental change

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dc.contributor.author Lewin, John
dc.contributor.author Coulthard, Tom J.
dc.contributor.author Macklin, Mark G.
dc.date.accessioned 2008-12-17T11:49:23Z
dc.date.available 2008-12-17T11:49:23Z
dc.date.issued 2005-07
dc.identifier.citation Lewin , J , Coulthard , T J & Macklin , M G 2005 , ' Modelling differential catchment response to environmental change ' Geomorphology , vol 69 , no. 1-4 , pp. 222-241 . , 10.1016/j.geomorph.2005.01.008 en
dc.identifier.issn 0169-555X
dc.identifier.other PURE: 96533
dc.identifier.other dspace: 2160/1752
dc.identifier.uri http://hdl.handle.net/2160/1752
dc.description Lewin, John, Coulthard, T.J., Macklin, M.G., (2005) 'Modelling differential catchment response to environmental change', Geomorphology 69(1-4) pp.222-241 RAE2008 en
dc.description.abstract The CAESAR (Cellular Automaton Evolutionary Slope And River) model is used to demonstrate significant differences in coarse sediment transfer and alluviation in medium sized catchments when responding to identical Holocene environmental changes. Simulations for four U.K. basins (the Rivers Swale, Ure, Nidd and Wharfe) shows that catchment response, driven by climate and conditioned by land cover changes, is synchronous but varies in magnitude. There are bursts of sediment transfer activity, generally of rapid removal but with some sediment accumulation ‘spikes’, with longer periods of slow removal or accumulation of sediment in different valley reaches. Within catchments, reach sensitivity to environmental change varies considerably: some periods are only recorded in some reaches, whilst higher potential sensitivity typically occurs in the piedmont areas of the catchments modelled here. These differential responses appear to be highly non-linear and may relate to the passage of sediment waves, by variable local sediment storage and availability, and by large- and small-scale thresholds for sediment transfer within each catchment. Differential response has major implications for modelling fluvial systems and the interpretation of field data. Model results are compared with the record of dated alluvial deposits in the modelled catchments. en
dc.format.extent 20 en
dc.language.iso eng
dc.relation.ispartof Geomorphology en
dc.title Modelling differential catchment response to environmental change en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1016/j.geomorph.2005.01.008
dc.contributor.institution Institute of Geography & Earth Sciences en
dc.contributor.institution River Basin Dynamics and Hydrology en
dc.description.status Peer reviewed en


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