Print Email Facebook Twitter Breaching vulnerability of coastal barriers under effects of tropical cyclones: A model study on the Hue lagoon - Vietnam Title Breaching vulnerability of coastal barriers under effects of tropical cyclones: A model study on the Hue lagoon - Vietnam Author Tuan, T.Q. Stive, M.J.F. Verhagen, H.J. Faculty Civil Engineering and Geosciences Department Hydraulic Engineering Date 2006-11-28 Abstract Under effects of tropical cyclones, the coast is subjected to attack both by surge and wave from the sea and by flooding from the bay. These forces pose a serious breaching threat to natural sea-defence works such as barrier spits, barrier islands, lagoon barriers, etc. on the coast. Unintended breaching can be catastrophic, causing losses of human life and damages to infrastructures and to natural habitats. Understanding of coastal breaching and breaching potential during tropical cyclone events is therefore of great importance to the management of coastal flooding hazards as well as to the design of sea-defence works. In this paper, a model study on breaching vulnerability of the coastal lagoon barrier of Hue-Vietnam during the historical event of the tropical cyclone in 1999 is presented. In spite of scarceness of available data, attempts were successfully made to simulate the barrier profile response and the barrier breaching process under this extreme condition. It is learnt that seaward erosion and severe wave overwash on coastal barriers during storms can considerably narrow and lower the barrier profile and thus exaggerate significantly the barrier breaching potential. The model predictions for the barrier response to wave overwash and the time-dependent breach growth seem realistic and in agreement with available observation data. Subject barrier breachingbreacing potentialbreach growthlagoon barrierswave overwash To reference this document use: http://resolver.tudelft.nl/uuid:8f66e0c1-4841-468d-808c-0c64079e56fe Publisher Guangdong Economy Publishing House Source ICEC 2006: Proceedings of the 2nd International Conference on Estuaries and Coasts, Guanzhou, China, 28 November 2006 Part of collection Institutional Repository Document type conference paper Rights © 2006 The Authors Files PDF 861-869_C21.pdf 691.87 KB Close viewer /islandora/object/uuid:8f66e0c1-4841-468d-808c-0c64079e56fe/datastream/OBJ/view