Analysis of rip currents hazards in the Drini Coastal area, Gunungkidul Regency with the utilization of drones and GIS

Abstract

Beach tourism is an example of a natural tourist destination in Indonesia. One area famous for its beach tourism is Gunungkidul Regency, located in the Province of Yogyakarta Special Region. Drini Beach is one of the many beaches in Gunungkidul Regency. Behind the beauty of beach attractions, some dangers threaten tourists, one of which is rip currents. This study aims to analyze the distribution of rip currents in Drini Beach and identify hazards for the safety of Drini Beach tourists. The method used is a survey method by recording aerial photos using the DJI Phantom 4 Pro V2 drone, for sampling the method used is a purposive sampling technique to find out the location of the potential rip currents on Drini Beach, Gunungkidul Regency. The results of this study show that there are four rip currents patterns found at Drini Beach. The four rip currents patterns are on the Western Drini Beach, separated on the West and East Sides, and have different speeds. Rip Current pattern one is on the West Side and has the highest speed, with the distance of rip Current 2 being 116 m. Bathymetry data on Drini Beach show distinct morphological differences between Western Drini Beach and Eastern Drini Beach. The Western Drini Coast tends to be deeper than the Eastern Part because it faces directly to the southwest (Indian Ocean), so winds blowing from the southwest can cause waves that form rip currents.