Mapping vulnerability level of tsunami disaster in Coastal Villages of Pariaman City, West Sumatera

Abstract

Abstract Pariaman city is one of the cities that is indicated prone to tsunami disasters because it is close to the shoreline and directly adjacent to the Indian Ocean. Coastal village of Pariaman City that faces directly to the offshore makes the coastal villages more vulnerable to tsunamis. Settlement is a residential area that must be protected, so mapping the vulnerability’s region to the tsunami that is focused on the settlements is needed to protect the residents. This study aims to map vulnerability level of settlements to tsunami disaster in the coastal village of Pariaman City. Vulnerability region is seen from exposure, sensitivity, and resilience. The data in this study are elevation, distance from shoreline, slope, distance from river, population, quality of the building, knowledge of disaster mitigation, and socialization of disaster mitigation. Each component is then overlaid with overlay techniques (scoring and weighting) of Geographic Information System (GIS) to obtain the vulnerability. The results showed that settlements in the coastal villages of Pariaman are dominated by “Low” vulnerability, followed by “Moderate” and “High” vulnerability. The “High” vulnerability levels are in low elevation, close to shorelines, low slopes, close to river, low building’s quality, high population, and no socialization.