Author(s): Janet Yi Yee Lee, Juan Carlos Savioli, Jacob Hjelmager Jensen, Chi Wei Cheng, Claus Pedersen
Linked Author(s): Janet Yi Yee Lee
Keywords: Coastal channel geometry, coastline reflectivity, Indian Ocean tsunami, onshore storage, reclamation.
Abstract: Designing coastal development such as coastal reclamation in a tsunami prone area necessitates the assessment of potential tsunami impacts, specifically the evaluation of the tsunami-induced water level around the proposed development. The configuration of coastal settings is one of the most important elements in affecting tsunami-induced water level. Three different coastal settings have been identified to be influential: (1) the reflectivity of different types of the coast whether it is a sandy beach to dissipate tsunami wave energy or rocky headlands to reflect tsunami wave, (2) the geometry of a coastal channel in manipulating entrance of tsunami waters into the channel and (3) the capacity onshore along the coastal channel that allows water run-up inland. Thus, this paper discusses the influence of the three coastal settings: Coastline Reflectivity, Coastal Channel Geometry and Onshore Storage, on the assessment of tsunami-induced water level around a synthetic coastal reclamation island in northern Peninsular Malaysia, based on the 26 December 2004 tsunami event and numerical simulations using MIKE 21 HD. These three coastal settings should be well considered and developed in a tsunami model as they ultimately act as constructive inputs to the decision of the final design of a proposed reclamation
Year: 2017