Tsunami Risk Mapping in Tempurejo District, Jember Regency based on BNPB Criteria using TOPSIS Method

Abstract

Tempurejo District is one of the areas directly adjacent to the Indian Ocean, where three active tectonic plates meet. This is evidenced by the 1994 tsunami in Banyuwangi, the impact of which was felt by the people of Tempurejo District, Jember Regency. In an effort to mitigate the risk of tsunami disaster that may occur in Tempurejo District, a tsunami risk map is needed in the area. There are very few studies on tsunami risk mapping in Tempurejo District. A previous study utilized only hazard and vulnerability parameter while capacity parameter is not taken into account while in this study, three parameters mentioned before are used to estimate the tsunami risk level. Furthermore, two methods are utilized to produce a tsunami risk map in Tempurejo District. The first method utilizes the Indonesian National Board for Disaster Management (BNPB) method, while the second method employs TOPSIS as a modified weighting method for tsunami risk mapping. The results of this study provide a map of the levels of hazard, capacity, vulnerability, and risk at the research location.