Tsunami Vulnerability Mapping of Coastal Areas to Confront the Banda Detachment Tsunami (Case Study at Tual City)

Abstract. Tsunami is a natural disaster that is most feared by humans, especially for people who live in coastal areas that are directly adjacent to seismically active seas in Indonesia. Dullah Island in Tual City is located in a coastal area directly adjacent to the Banda Sea, making this area have a high level of tsunami hazard. The Banda Sea is known as an active sea that emits earthquake energy, both those that do not have the potential to cause a tsunami. The existence of previous research on the run-up height of tsunami waves in Tual City makes it important to study the characteristics of the Tual City area to formulate disaster mitigation-based planning using the GIS (Geographic Information System) based qualitative spatial analysis method with variables of slope, height of the area, distance from the coastline, and land use. The high level of tsunami hazard and extremely high population exposure considering that the majority of the population in the coastal area lives on the coast, it is important to study the characteristics of the region to formulate disaster mitigation-based planning to create a Build Back Better region and community.