Modelling morphological response of large tidal inlet systems to sea level rise
- Dissanayake, Pushpa Kumara.
- Leiden : CRC Press/Balkema, c2011.
- Physical description
- viii, 180 p. : ill. ; 24 cm.
GB454 .I54 D578 2011
- Unknown GB454 .I54 D578 2011
- Includes bibliographical references (p. -168).
- 1 Introduction 2 Tidal inlets in the Dutch Wadden Sea 3 Numerical modelling of the decadal evolution of tidal inlets 4 Morphological response of tidal inlets to Relative Sea Level Rise 5 Inlet effect on adjacent coastlines 6 Process-based and Semi-empirical models on inlet evolution 7 Sand nourishment on tidal inlets 8 Conclusions and recommendations.
- (source: Nielsen Book Data)
- Publisher's Summary
- 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.
(source: Nielsen Book Data)
- Publication date
- Pushpa Kumara Dissanayake.
- Thesis (doctoral)--Delft University of Technology and UNESCO IHE Institute for Water Education, 2011.