Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 450884
Title Modelling reponse to natural damming in an artificial catchment using LAPSUS. EGU2013-13822
Author(s) Gorp, W. van; Temme, A.J.A.M.; Baartman, J.E.M.; Schoorl, J.M.
Event EGU General Assembly 2013, Vienna, 2013-04-07/2013-04-12
Department(s) Soil Geography and Landscape
Land Degradation and Development
Publication type Abstract in scientific journal or proceedings
Publication year 2013
Abstract Fluvial landscapes respond non-linearly to damming. Until now, research to these phenomena has focussed on fieldwork studies. Using a Landscape Evolution Model (LEM) to systematically understand fluvial response to damming has not been done yet. LEM LAPSUS is capable of dealing with depressions in a natural way and has recently been enhanced to incorporate 3D geology and to identify newly deposited sediments. The aim of this study was to model landscape evolution using LAPSUS in a small artificial catchment, that experienced base level change due to natural-damming. A rectangular catchment of 2100 x 6000 m with a 20 m resolution was given a net annual rainfall of 300 mm for a period of 10000 year. Two different landscapes, having a high erodible substrate and a low erodible substrate were modelled. For both landscapes, Three scenarios were evaluated: (i) dam and substrate having equal erodibility; (ii) dam being 10 times more erodibile than substrate; and (iii) dam being 10 times less erodible than substrate. Results showed differences in lake siltation rate, plan channel evolution, longitudinal profile evolution and sediment redistribution patterns. These differences related non-linearly to erodibilities and demonstrate complex response to local base level change. Fluvial archives of landscapes which are regularly undergoing natural dammings should be approached with caution as terrace formation does not necessarily reflect basin wide climate signals.
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