The Impact of Environmental Changes and the Damage to the Structure of Beach Buildings in the Southeast Jazirah of Saparua Island, Central Maluku District

The coastal border is a certain area along the coast that has important benefits for maintaining the sustainability of coastal functions. The criterion for a coastal boundary is land along the edge whose width is in accordance with the shape and physical condition of the beach, at least 100 m from the highest tide point towards the mainland. Shoreline change is a series of coastal processes caused by external factors (currents, waves, winds and tides) and internal (characteristics and types of sediments and the base layer where the sediments are located). Shoreline changes will refer to sedimentary activity and deposition, namely the deposition of rock material that has been transported by hydropower or wind that occurs on the coast. The purpose of this paper is to determine environmental changes to coastal damage in the Southeastern Peninsula of Saparua Island and to analyze the damage to coastal structures that occurred in the Southeastern Peninsula of Saparua Island. The entire coastal building that was damaged by abrasion was the seawall. The benchmark for damage to the coastal environment from settlements and public facilities is with a weight of 200% and priority. While the agricultural area is with a weight of 100 and is less prioritized. Evaluation of the damage assessment of the coast of the Southeastern Peninsula which consists of 4 villages, namely Ouw Village, Ulath Village, Siri Sori Islam Village, and Siri Sori Serani Village with an importance weight coefficient of 1.00. The review was carried out based on the damage to the building that occurred, namely from STA 00+500 (with a building condition index of 3.4; Needs repair), STA 00+1500 (with a building condition index of 4; Heavily Damaged), STA 00+2000 (with a building condition index 3; Needs Repair), STA 00+3200 (with a building condition index of 3; Needs Repair), and STA 00+3600 (with a building condition index of 4; Heavily Damaged).