Analysis of shoreline erosion at the Da Rang river mouth, Phú Yên

Abstract

    In recent years, the erosion of shoreline at the Da Rang River mouth that is located in Tuy Hoa City, south central Vietnam has become serious. This study presents changes of coastal morphology at this river mouth through the analysis of satellite images. Shoreline position in the area of about 7 km in length around the river mouth was eroded severely, while it was stable on other adjacent areas. The erosion was most severe at the river mouth, whereas it was mild on the beaches far away from the river mouth. There are demarcations where the severe erosion did not propagate beyond. The roles of sand terrace as submerged sand source proving sediment to the adjacent shoreline is also discussed. The evolution of morphology at this river mouth is very important; hence field survey data and further study are highly required.