PLATFORM REEF LAGOON DETECTION FROM SENTINEL-2 IN PANGGANG ISLAND AND SEMAKDAUN ISLAND

Processing of satellite image data for the detection platform reef lagoons is intended as one geo-physical parameters landform. Panggang Island and Semakdaun were chosen to make model because they are ideal lagoon landforms tapulang court reefs. This only valid in continental shelf area back arc small island tectonic type. Determination this location done improve accuracy spectral-based processing. Platform reefs four classes landforms. Sentinel-2A with a spatial resolution 10m, blue, green, red, near infrared bands selected investigate their ability detect lagoons. by calculating Optimum Index Factor (OIF) produce composite drawing transect lines pixel values spectral graphics lagoon. The results processing form graphs, images built realize digital model. These used growth stage analysis classification three landforms, visually digitally interpretation. visual system design useful monitoring coral ecosystems.