3D modelling of tsunami disaster in Pacitan Regency, East Java, using Arcgis

Abstract Tsunamis are large ocean waves caused by many things, such as earthquakes, plate motion, volcanic eruptions on the ocean floor, and the collision of space objects. Tsunamis are unpredictable disasters that cause massive damage and kill thousands of people in a matter of seconds. Pacitan Regency is one of the areas in southern Java that is vulnerable to tsunamis and earthquakes because it is located near major global plates such as the Indo-Australian Plate and the Eurasian Plate. However, there is not much discussion on tsunami modelling for Pacitan regency, in contrast to other southern coastal areas. This research focuses on modelling tsunami disaster scenarios at Watu Karung Beach, Pacitan Regency. The modelling is made by 3D modelling method that utilizes images from Google Earth and regional contour data to create 3 types of tsunami wave height scenarios, namely 10 m, 15 m, and 20 m heights that are calculated and modeled by ArcGIS software and Arcscene. The result of the modelling is a visualization of tsunami scene in wave height scenarios (10m, 15m and 20 m) and mitigation point analysis.