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| Effect of bottom stress formulation and tidal forcing on modeled flow and sediment trapping in cross-sections of tide-dominated estuaries |
| Schramkowski, G.; Huijts, K.M.H.; Schuttelaars, H.M.; de Swart, H.E. (2008). Effect of bottom stress formulation and tidal forcing on modeled flow and sediment trapping in cross-sections of tide-dominated estuaries, in: (2008). PECS 2008: Physics of Estuaries and Coastal Seas, 25-29 August, Liverpool: program and abstracts. pp. 167-170 |
| In: (2008). PECS 2008: Physics of Estuaries and Coastal Seas, 25-29 August, Liverpool: program and abstracts. PECS Advisory Board[s.l.]. xvi, 424 pp., meer |
| Beschikbaar in | Auteurs |
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Documenttype: Congresbijdrage
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| Trefwoorden |
Dichtheidsstromingen; Getijstroming; Sedimentval; Marien |
| Abstract |
Field data collected in cross-sections of tide-dominated estuaries reveal that flow and suspended sediment
concentration show pronounced spatial and temporal behavior, which depend on factors like tidal discharge,
density gradients and the geometry of the cross-section. Models are capable of reproducing and explaining
many aspects of the observations, but also marked discrepancies occur between model results and data. The
objective of the present study is to systematically investigate the sensitivity of model output to formulations
of physical processes. This is done by comparing two types of models. The first is a numerical model (NM)
that solves the full shallow water equations with prognostic salt dynamics. The second is an IM that solves a
reduced set of equations for tidal water motion and uses a diagnostic salinity field. The IM can be used as a
tool to interpret the complex output of the NM. The NM, on the other hand, can be used to probe the limits of
applicability of the IM and may give hints on further improvements of the IM. |
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