SHORELINE CHANGES (1984 – 2019) IN THE ÇORUH DELTA (GEORGIA/BATUMİ)

43881

Coasts are dynamic environments that vary depending on time. Especially in the period we are in, the changes in coastal lines frequently occur due to antropogenic activity. Turkey, a riparian country of the Black Sea basin, is the source of many rivers that discharge into the Black Sea, both within its borders and through transboundary waters. There are quite large deltas in the mouth of these rivers. The Çoruh Delta, the subject of this study, was formed by sediments carried by a transboundary stream between Turkey and Georgia. Since the beginning of the 2000s located in the catchment areas within the borders of Turkey has gained Dam and Hydroelectric Power Plant construction work rate. In this context, the amount of sediment carried by the Coruh River naturally entered a downward trend. In this study, it is aimed to reveal the possible shoreline change in the Coruh Delta. Landsat satellite images of 1984, 1991, 2005 and 2019 were used in the study. Shorelines obtained from satellite images were evaluated together and traces of change were investigated. As a result of the study, it was determined that a dominant abrasion activity developed on the left bank of the river mouth, and abrasion and accumulation activities on the right beach. Net area loss in the delta was calculated as 63 ha. Between 1984 and 2019, a maximum decline of 238 m in the direction of land was detected in the shoreline of delta.

589

Delta , Shoreline , Transboundary Water , Dam , Çoruh Delta

International Journal of Geography and Geography Education

601

International Journal of Geography and Geography Education