DUNE EROSION PHYSICAL, ANALYTICAL AND NUMERICAL MODELLING

Proceedings of the International Conference on Coastal Engineering

Felice D'Alessandro²  Fausta Musci²  Andrea Ricca¹  Giuseppe Roberto Tomasicchio² 

[1] University of Calabria;University of Salento

关键词: dune erosion;    overwash;    large-scale experiment;    numerical model;    analytical model;   

DOI  :  10.9753/icce.v33.sediment.32

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

The present paper provides an overview of the large-scale physical model experiments performed at the Canal d’Investigaciò i Esperimentaciò Marìtima (CIEM), Laboratori d’Enginyeria Marìtima (LIM), Universitat Politècnica de Catalunya (UPC), Barcelona, within the EU-Hydralab III Integrated Infrastructure Initiative. The model tests have been carried out in a flume with a sandy dune exposed to a combination of water levels and wave conditions. Different regimes of wave attacks on the sandy/beach dune system have beeninvestigated; in particular, the study provides a unique set of large-scale physical data concerning the storm waves induced dune overwash (Tomasicchio et al. 2011a; Tomasicchio et al.2011b). The effects of various “load parameters” on the dune erosion process generation, including dune recession rates in terms of the retreat of the dune face, Δx, and the eroded volume, ΔV, have been investigated and discussed. The laboratory data sets have been adopted to calibrate and verify the analytical model proposed by Larson et al. (2004) in order to calculate the values of ΔV at specific time intervals. Furthermore, the profile measurements have been used to calibrate and verify the numerical model C-SHORE (Kobayashi et al. 2007) predicting the beach-dune profile modifications over the near-shore region (Tomasicchio et al. 2011a; Tomasicchio et al.2011b).

【 授权许可】

Unknown