Searched for: subject:"process"
(1 - 6 of 6)
document
van der Vegt, H. (author), Storms, J.E.A. (author), Walstra, D.J.R. (author), Howes, N.C. (author)
Abstract Understanding the processes and conditions at the time of deposition is key to the development of robust geological models which adequately approximate the heterogeneous delta morphology and stratigraphy they represent. We show how the mechanism of sediment transport (the proportion of the sediment supply transported as bed load vs....
journal article 2016
document
Walstra, D.J.R. (author)
Nearshore sandbars have a lifetime of many years, during which they exhibit cyclic, offshore directed behaviour with strong alongshore coherence. A bar is generated near the shoreline and grows in height and width while migrating offshore, before finally decaying at the seaward limit of the surf zone. It may take 10 to 15 years for a bar to...
doctoral thesis 2016
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Walstra, D.J.R. (author), Wesselman, Daan (author), van der Deyl, Eveline (author), Ruessink, BG (author)
Inter-annual bar dynamics may vary considerably across sites with very similar environmental settings. In particular, the variability of the bar cycle return period (Tr) may differ by a factor of 3 to 4. To date, data studies are only partially successful in explaining differences in Tr, establishing at best weak correlations to local...
journal article 2016
document
Walstra, D.J.R. (author), Ruessink, G. (author), Hoekstra, R. (author), Tonnon, P.K. (author)
Input reduction is imperative to long-term (> years) morphodynamic simulations to avoid excessive computation times. Here, we discuss the input-reduction framework for wave-dominated coastal settings introduced by Walstra et al. (2013). The framework comprised 4 steps, viz. (1) the selection of the duration of the original (full) time series of...
conference paper 2013
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Blossier, B. (author), Briere, C. (author), Roelvink, J.A. (author), Walstra, D.J.R. (author)
Sand beach profiles can exhibit nearshore sandbars with complex 3D patterns. Under energetic conditions, these patterns disappear and the bars get to a certain extent alongshore uniform. This phenomenon is called a reset. The existing literature mainly concerns the development of the bar patterns (3D) or the cross-shore migration of sandbars (2D...
conference paper 2012
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Walstra, D.J.R. (author), Hoyng, C.W. (author), Tonnon, P.K. (author), Van Rijn, L.C. (author)
This experimental study focuses on the morphological development of a near-equilibrium profile on which to types of shoreface nourishments are placed. As previous studies have indicated that the efficiency of nourishments is mainly influenced by water depth in which they are constructed, two cross-shore locations are considered for an accretive...
conference paper 2011
Searched for: subject:"process"
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