Temporal Mapping of Coastal Areas Using Landsat Satellite Imagery

Surabaya is one of the many coastal areas in Indonesia which is an archipelago country. Land use changes have affected the coastal Surabaya. For several decades, there have been changes in land cover on the coastal Surabaya, especially in East Surabaya. Initially the coastal area was a mangrove conservation area, but the land function changed to become a pond area and residential area (urban area). The functions of these lands influence each other so that the coastline of Surabaya also changes. Remote sensing satellite imagery data can help to monitor coastal areas both land cover and coastline. In this research, we used Landsat satellite image data 1994–2023. The method used to classify land cover is the guided classification method (Maximum Likelihood) while to determine the speed of shoreline change using tools in ArcGIS, namely the Digital Shoreline Analysis System (DSAS). The purpose in this research is to determine changes in land cover and determine the rate of change of the coastline in Surabaya (erosion and accretion). Monitoring the Surabaya coastal area is needed to determine the correlation of changes in the coastal area to socio-economic aspects so that it becomes a recommendation for better coastal area management for the Surabaya area.