1. A synoptic picture of the impact of the 26th December 2004 Indian Ocean tsunami on the coast of Sri Lanka
- Author
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K. Ilayaraja, M. Chlieh, Willington Renteria, P. Arreaga-Vargas, M. Ioualalen, Géoazur (GEOAZUR 6526), Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Instituto Oceanografico de la Armada de Ecuador (INOCAR), INOCAR, Department of Applied Geology, University of Madras, Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Nice Sophia Antipolis (... - 2019) (UNS), and Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
geography ,Environmental Engineering ,geography.geographical_feature_category ,010504 meteorology & atmospheric sciences ,Ecological Modeling ,Sumatra ,Submarine canyon ,Numerical simulation ,Shoaling and schooling ,Tsunami propagation ,010502 geochemistry & geophysics ,01 natural sciences ,Indian ocean ,Oceanography ,Runup ,Climatology ,Wave height ,14. Life underwater ,Sri lanka ,2004 tsunami ,Software ,Geology ,Seabed ,Sri Lanka ,0105 earth and related environmental sciences - Abstract
Environmental Modelling & Software, pp. online, 2010; International audience; A numerical simulation of the 26th December 2004 Indian Ocean tsunami for the entire coast of Sri Lanka is presented. The simulation approach is based on a fully nonlinear Boussinesq tsunami propagation model and a robust coseismic source. The simulation is first confronted to available measured wave height. The agreement between observations and the predicted wave heights allowed a reasonable validation of the simulation. As a result a synoptic picture of the tsunami impact is provided over the entire coast of Sri Lanka. It is found that amplification due to shoaling applies mainly in the Eastern and Southern coast because, here, the wave is propagating across the sea floor slope, while propagating along the slope for the Western coast. Spots of high waves are due to wave focusing in some coastal areas while local submarine canyons in other areas inhibit the wave amplification.
- Published
- 2010
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