Applying DSAS tool to detect coastal changes along Nile Delta, Egypt

The coastline of the Nile Delta is a dynamic zone in Egypt that is received considerable attention. Thisregion contains many major cities and it also contains a number of economically important harbors suchas Damietta, Port Said and Alexandria. This research focuses attention on applying GeographicalInformation System (GIS) tool to assess prospective changes along the coast of the Nile Delta, Egypt dur-ing the past thirty-four years. In this paper, changes to the coastline were monitored using twelve scenesof Landsat images from 1984 to 2018. After the extraction of shorelines from Landsat images, DigitalShoreline Analysis System (DSAS) was used to calculate shoreline displacement rate. The results showedthat about 44.2% of the study area was under erosion and 45% was under accretion while it was stable at10.8% between 1984 and 2018. The results illustrated that Rosetta and Damietta promontories are dis-played higher rates of erosion than other coastal regions of the Nile Delta. National measures must beimplemented to protect the entire coast in threatened areas.