Analisis Penjalaran Tsunami menggunakan metode Combine Equivalent Roughness : Studi Kasus Kota Painan, Sumatera Barat, Indonesia.

Abstract

This research is entitled "Tsunami Propagation Analysis Using the Combined Equivalent Roughness Method: A Case Study of Painan City, West Sumatra, Indonesia". In this study, the roughness coefficients used are taken from BNPB data and have different values for objects such as water, buildings, land, and vegetation. After land-use classification is conducted in the Painan City area, the results are divided into several grids measuring 5 meters by 5 meters. From each grid, coordinate points and their corresponding roughness values are taken and used in the simulation of tsunami propagation in Painan City. The tsunami simulation is performed using the COMCOT software from Cornell Multigrid. In this simulation, only one scenario is used for the Padang Fault Zone with a duration of 120 minutes. The simulation results provide information about the initial conditions and the process of tsunami propagation. From this process, the distance of inundation resulting from the tsunami can be calculated using the Equivalent Roughness Method (ERM), which yields an inundation height of 4-6 meters