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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 423956
Title Landscape self organisation: Modelling Sediment trains
Author(s) Schoorl, J.M.; Temme, A.J.A.M.; Veldkamp, A.
Event European Geosciences Union, General Assembly 2012, Vienna, Austria, 2012-04-22/2012-04-27
Department(s) Land Dynamics
PE&RC
Publication type Abstract in scientific journal or proceedings
Publication year 2012
Abstract Geophysical Research Abstracts Vol. 14, EGU2012-7783, 2012 EGU General Assembly 2012 © Author(s) 2012 Landscape self organisation: Modelling Sediment trains J.M. Schoorl, A.J.A.M. Temme, and A. Veldkamp Wageningen University, Land Dynamics group, Wageningen, Netherlands (jeroen.schoorl@wur.nl) Rivers tend to develop towards an equilibrium length profile, independently of exogenous factors. In general, although still under debate, this so-called self-organisation is assumed to be caused by simple feedbacks between sedimentation and erosion. Erosion correlates positively with gradient and discharge and sedimentation negatively. With the LAPSUS model, which was run for the catchment of the Sabinal, a small river in the South of Spain, this interplay of erosion and sedimentation results in sediment pulses (sequences of incision and sedimentation through time). These pulses are visualised in a short movie ( see http://www.youtube.com/watch?v=V5LDUMvYZxU). In this case the LAPSUS model run did not take climate, base level nor tectonics into account. Therefore, these pulses can be considered independent of them. Furthermore, different scenarios show that the existence of the pulses is independent of precipitation, erodibility and sedimentation rate, although they control the number and shape of the pulses. A fieldwork check showed the plausibility of the occurrence of these sediment pulses. We conclude that the pulses as modelled with LAPSUS are indeed the consequence of the feedbacks between erosion and sedimentation and are not depending on exogenous factors. Keywords: Landscape self-organisation, Erosion, Deposition, LAPSUS, Modelling
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