TSUNAMI NUMERICAL SIMULATION SURROUNDING MALAYSIAN WATERS AT SOUTH CHINA SEAMardi N.H., Malek M.A. and Liew M.S.
Tsunami is recognized as one of the natural disaster that contributed to tsunami effect towards Malaysian waters. Even though the source of tsunami source is from the neighboring countries, Malaysia waters may experience after effect. Recently, many studies were performed around the areas of South China Sea in order to identify the potential tsunami wave height in the event of tsunami occurrences. Tsunami event can be developed by earthquake, landslide, volcanic eruption or impact of significant object on the sea surface such as meteorites. This study performed a simulation of tsunami event at Malaysian waters due to earthquake originated from Manila Trench, Philippines. Ten (10) observation points located around Malaysian waters were established in order to observe the tsunami wave height and the time of arrival. This study further conducted sensitivity analysis towards the effects of tsunami wave height, time of arrival, moment magnitude and focal depth. Tsunami numerical model named TUNA-M2 is used to perform the tsunami simulation. Results obtained from this study showed that, as the moment magnitude increases, tsunami wave height will increase and tsunami wave will move faster at constant focal depth. As the focal depth increases, tsunami wave height will decrease and tsunami wave will move slower at constant moment magnitude.
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