SIMULATION OF THE PALU 2018 TSUNAMI EVENT, GENERATED BY THE EARTHQUAKE AND SUBMARINE LANDSLIDE

• Main Author: Firsta, Randy
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/47141
• Institution: Institut Teknologi Bandung

The tsunamis that occurred in Indonesia were mostly caused by the existence of earthquakes, but the tsunami that occurred on 28 September 2018 in Palu was suspected caused by the presence of underwater landslides. Therefore, this study discusses the tsunami incident in Palu in 2018 by considering the source of earthquakes and underwater landslides using the Cornell Multi-Grid Coupled Tsunami (COMCOT) model v.1.7. The data used are bathymetry and topography data from the Information and Geospatial Agency (BIG). This study uses two scenarios in the simulation, tsunamis that generate by the earthquake and tsunamis generate by submarine landslides. The results of this study indicate that high tsunamis along the coast from Tasiburi to Baiya vary in height. The results of the earthquake scenario show that the maximum tsunami in Palu City reached 4 meters. While the results of the submarine landslide scenario show the maximum in Palu City reaches 1.78 meters. From both of these scenarios, vaildation using Aida numbers is done. Scenarios with earthquake generators have better Aida numbers compared to landslides. Based on the results of this study, the 2018 Palu tsunami struck an earthquake which was carried out right in the middle of Palu Bay.