Coastline Change Detection Based on Sentinel-2 Imagery Data in Jembrana Regency, Bali Province

Abstract

Satellite imagery has been widely used to study of monitoring and analysis of coastal areas considered low cost and its ability to collect information over large spatial areas. The aim of this study is to detect the coastline changes corresponding to coastline changes in volumes of coastal sediments in Jembrana Regency, Bali Province by using Sentinel-2 imagery data. Sentinel-2 image has high spatial resolution and high temporal frequency compared with other free-access satellite imagery data with 10 m spatial resolution. Coastline measurements provide information about the coastal loss over the years and the changes in the coastal area. This study is essentially needed in order to identify areas that require further investigation and protection. Results showed during the initial 3-year period from 2016 to 2019 coastal area of Jembrana Regency changed with total accretion of 226,999 m² and erosion of 586,042 m². The shoreline changes from 2016 to 2019 are highly changed due to the morphological changes in the coastal area.