Settlement land directions based on the tsunami disaster in the coastal of Purworejo District, Central Java

Abstract

The purpose of this study was to determine the direction of land use for settlements. The research location is on the coast of Purworejo Regency which includes Purwodadi District, Ngombol District, and Grabag District. This study uses a quantitative descriptive method. Data collection techniques include observation, interviews, and secondary data processing from related agencies. The analytical technique used in the Geographic Information System (GIS) analysis is to overlay tsunami hazard data, evaluate the suitability of residential land and area functions. The results of the overlay will show the zoning for the direction of the settlement. The results showed that the coast of Purworejo Regency has three directions of land use for settlements. The optimal direction of land use for settlements has an area of 427.6 Ha with the development of settlements with high density and can be developed as a Central Business District (CBD) area. The conditional direction of land use for settlements has an area of 3794.05 Ha. The law on the development of low-density residential areas and residential areas with structural and non-structural mitigation because this zone has a moderate level of tsunami vulnerability. The directive not to make settlements with an area of 1242.78 hectares is directed to the green belt area with limited community activities.