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An enhanced depth-averaged tidal model for morphological studies in the presence of rotary currents
- Source :
- Continental Shelf Research. 27:82-102
- Publication Year :
- 2007
- Publisher :
- Elsevier BV, 2007.
-
Abstract
- A simple and efficient method to improve morphological predictions using depth-averaged tidal models is presented. The method includes the contribution of secondary flows in sediment transport using the computed flow field from a depth-averaged model. The method has been validated for a case study using the 3D POLCOMS model and ADCP data. The enhanced depth-averaged tidal model along with the SWAN wave model are applied to morphological prediction around the Lleyn Peninsula and Bardsey Island as a case study in the Irish Sea. Due to the presence of a headland in this area two asymmetrical tidal eddies are developed in which the cyclonic eddy is stronger as a result of Coriolis effects. The results show that the enhanced model can effectively predict formation of sand banks at the centre of cyclonic eddies, while the depth-averaged model, due to its inability to accommodate secondary flow, is inadequate in this respect.
Details
- ISSN :
- 02784343
- Volume :
- 27
- Database :
- OpenAIRE
- Journal :
- Continental Shelf Research
- Accession number :
- edsair.doi...........eaffdebbbe689acd2795887171f3c4ed