Modelling Morphological Response of Large Tidal Inlet Systems to Sea Level Rise UNESCO-IHE PhD Thesis
Auteur : Dissanayake Pushpa Kumara
The research presented in this work qualitatively investigates the morphodynamic response of a large tidal inlet/basin system to future relative sea level rise (RSLR) using the state-of-the-art Delft3D numerical model. Understanding the potential impacts of RSLR on these systems is a prerequisite for their sustainable management due to their rich bio-diversity and the increase in economic activities and local communities in recent decades.
The adopted approach used a highly schematised model domain analogous to the Ameland inlet in the Dutch Wadden Sea. Model simulations were undertaken applying tidal and wave boundary forcings with three IPCC projected RSLR scenarios (no RSLR, low RSLR and high RSLR).
Predicted inlet evolution indicated a channel/shoal pattern typically observed at the Ameland inlet. RSLR enhances the existing flood-dominance of the system leading to erosion on the ebb-tidal delta and accretion in the basin. Under the no RSLR case, resulting bed evolution of the process-based model (Delft3D) tends to agree with empirical-equilibrium relations of the ASMITA model. Application of the low RSLR scenario resulted in quite stable tidal flat evolution. Model simulations with the high RSLR scenario indicated disappearing the tidal flats over time and turning the system into a lagoon. Applying nourishment hardly compensated the RSLR induced sediment demand of tidal flat evolution.
Date de parution : 10-2017
17x24.5 cm
Disponible chez l'éditeur (délai d'approvisionnement : 14 jours).
Prix indicatif 214,69 €
Ajouter au panierDate de parution : 12-2011
Ouvrage de 200 p.
17.4x24.6 cm
Disponible chez l'éditeur (délai d'approvisionnement : 14 jours).
Prix indicatif 117,69 €
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Mots-clés :
Ebb Tidal Delta; ebb; Tidal Flats; delta; Tidal Inlets; gorge; Inlet Gorge; flats; Inlet Effect; dutch; Initial Flat Bed; wadden; Tidal Prism; bed; Bed Evolutions; evolutions; Initial Bathymetry; barrier; Van Der Wegen; island; Sand Nourishment; Adjacent Coastlines; Inlet Elements; Tidal Flat Areas; Channel Volume; Wadden Sea; Dutch Wadden Sea; Flood Tidal Delta; Wave Chronologies; Sediment Bypassing; S1 Scenario; Eustatic SLR; Wave Energy; Flat Height; Bed Load Transport