Alternatif Penanggulangan Kerusakan Bangunan Pelindung Pantai Koraevar Kota Dobo Kecamatan Pulau-pulau Aru Kabupaten Kepulauan Aru

Abstract

which suffered coastline retreatment and damage to coastal protection building. The purpose of this research is to know the magnitude of coastline change and how big wave height so The province of Maluku about 90% is sea and 10% is landmass so it tends to have problems about the coastal area as one example of Koraevar Beach located in Dobo City Aru Islands.Regency that can be done to overcome the damage of coastal by calculating wave height and coastline change by using CERC method after that give solution to overcome change of coastline and damaged coastal building. Data analysis conducted in this paper is a wind data processing obtained from BMKG. The results of the writing show that the wave energy for the west direction is 0.883 Nm, the northwest direction is 2.836 Nm and the southwest direction is 1.055 Nm. The peak elevation of the plan revetment was 7.23 m while the peak elevation of the revetment at the study site was 2.50 m. so at run up time, wave overtoping or wave overtop exceeds revetment height.