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Numerical Simulation of Morphological Changes due to the 2004 Tsunami Wave around Banda Aceh, Indonesia

1
Department of Architecture and Civil Engineering, Toyohashi University of Technology, 1-1 Tempaku Cho, Toyohashi, Aichi 441-8580, Japan
2
Tsunami and Disaster Mitigation Research Center (TDMRC), Universitas Syiah Kuala, Jl. Prof. Dr. Ibrahim Hasan, Gp. Pie, Banda Aceh 23233, Indonesia
3
Civil Engineering Department, Faculty of Engineering, Universitas Syiah Kuala, Jl. Syeh Abdurrauf No. 7, Banda Aceh 23111, Indonesia
*
Author to whom correspondence should be addressed.
Geosciences 2019, 9(3), 125; https://doi.org/10.3390/geosciences9030125
Received: 8 January 2019 / Revised: 27 February 2019 / Accepted: 6 March 2019 / Published: 12 March 2019
(This article belongs to the Special Issue Interdisciplinary Geosciences Perspectives of Tsunami Volume 2)
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Abstract

The 2004 Indian Ocean tsunami caused massive morphological changes around the coast of Sumatra, Indonesia. This research investigates the coastal morphological changes in the Banda Aceh area via coupling a hydrodynamic model with a sediment transport module. The Cornell Multigrid Coupled Tsunami Model (COMCOT) was coupled with the XBeach Model to simultaneously simulate sediment transport and the hydrodynamic process during the tsunami. The coupled model is known as COMCOT-SED. Field bathymetric data measured in 2006 were used to validate the coupled model. This study reveals that the tsunami’s impact was more severe on the eastern part of the coast, where it hit directly. Meanwhile, the western part of the coast suffered a lower impact because of the sheltering effects from a series of small islands and a headland to the north. This study has shown that the model results from COMCOT-SED are consistent with field data and show where the tsunami waves caused offshore erosion. View Full-Text
Keywords: COMCOT-SED; tsunami; coastal erosion; sediment transport COMCOT-SED; tsunami; coastal erosion; sediment transport
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Rasyif, T.M.; Kato, S.; Syamsidik; Okabe, T. Numerical Simulation of Morphological Changes due to the 2004 Tsunami Wave around Banda Aceh, Indonesia. Geosciences 2019, 9, 125.

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