Multi-Event Flood Inundation Detection Using Sentinel-1 SAR Ratio Image on Alluvial Plain: A Case Study of Klaten Regency, Indonesia
Periodic river flooding occurs in Klaten Regency, consistently striking within close time intervals; however, spatial documentation for this area is currently unavailable. This study applies the Ratio Image method to Sentinel-1 SAR imagery processed using Google Earth Engine, to delineate floodwater distribution during...