Abstract
The frequency of tsunamis in Indonesia is smaller than other natural disasters. But its destructive power is quite large. Although this disaster has a low probability of occurring. The losses caused by these disaster equaled and even exceeded frequent disasters such as floods and landslides. More than 85% of tsunamis in Indonesia were caused by underwater earthquakes. Thus, mitigation efforts are needed to minimize the impact of the tsunami disaster. The source of the tsunami wave was generated on the Makassar Strait Thrust North Fault. In this study, tsunami was modelled by using Delft3D software. The model approach uses the principle of momentum and continuity. The area of the model was divided into 2 grids. The wave reached the bay mouth in 10 minutes and arrived at the coast of the study area in 20 minutes. The highest peak of water level on the coast occurred in the second wave with an amplitude of 2.45 m and a wave height of 5.19 m. The inundation map was compared to the recorded data from the 2018 tsunami. It was found that there is no significant difference between the two although the tsunami generation were different.
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