Evaluation of the Stability of Muddy Coastline Based on Satellite Imagery: A Case Study in the Central Coasts of Jiangsu, China

Monitoring the coastline dynamic can provide basis for balance of sediment erosion and deposition. The evaluation coastal stability is beneficial to decision makers rational development ecological conservation resources. present study first collected 61 scenes remote sensing images extracted multi-temporal coastlines from years 1990–2020 in Jiangsu Province, China using an improved waterline method. Given characteristics gentle slopes our area, we modified actual tidal level data avoid influence different regimes. Finally, analysis was conducted on central coast Jiangsu, which experiences frequent changes siltation. results showed that has changed significantly; natural decreased by 116 km, while artificial increased 108 km. area flats 1152 km2, average width 8.83 km 3.55 In general, advanced seawards many years, mainly due siltation flat reclamation, with annual rates reclamation 9.67 km/a 40.75 km/a, respectively. node migrated 1.8 southwards, moving Sheyang Estuary Doulong Port. gradually north south, values 88.5 (40%) stable 63.97 (28.9%) extremely unstable coast. most came areas. method this expected a reference evaluating typical muddy coasts, sustainable development, utilization, protection