Application of Remote Sensing Analysis for Shoreline Change as a Basis for Coastal Abrasion and Erosion Disaster Mitigation on the Selayar Limestone Formation, South Sulawesi Province Indonesia Hendra Pachri, and Zarwa Zashika
Department of Geological Engineering, Faculty of Engineering, Hasanuddin University, Indonesia
Abstract
The coastal area of Bulukumba area, in South Sulawesi Province is composed of carbonate sedimentary rocks, particularly limestone. In this region, limestone tends to be relatively fragile and easily eroded, making the area highly vulnerable to coastal abrasion and erosion. This study aims to analyze shoreline changes over the past 10-15 years using remote sensing methods, including the use of satellite imagery such as Landsat and Sentinel-2, the Normalized Difference Water Index (NDWI), the Normalized Difference Moisture Index (NDMI), and shoreline change analysis through the Digital Shoreline Analysis System (DSAS). Additionally, geological interpretation of the coastal area, particularly the limestone lithology, was conducted to examine its correlation with the pattern of shoreline change. This research is expected to produce shoreline change maps, abrasion and erosion zonation maps, and coastal geological vulnerability maps. The information obtained can serve as a reference for formulating disaster mitigation strategies related to coastal abrasion and erosion in the study area.
