We adopted three heterogeneous slip models estimated by inversion method from satellite altimetry data, tsunami waveform data at tide gauges and the joint data as tsunami source models. Non-Linear Shallow Water Equations (NSWE) by considering the effects of the earth’s curvature were applied in the numerical simulation to evaluate the tsunami propagation and runup at the target areas in Penang and Langkawi, Malaysia. We applied a nesting grid system with four layers in the numerical modeling.
The result shows that the locations in the study region, Pantai Acheh, Pantai Tengah, Pantai Chenang, Kuala Triang and Pantai Kok, are prone to the tsunamis, where the tsunami heights of about 2.5 m were calculated. The calculated tsunami waves from the all source models almost reproduce the observed ones at two tide gauges. Tsunami source models with larger slip amount over Nicobar and Andaman Islands contribute to the maximum tsunami runup as high as 4.0 m in Pantai Tengah and Pantai Chenang. These results are almost agreeable to the runup-height data by the field survey.