Author(s): Halil Ä°brahim ZEYBEK , Harun ReÅit BAÄCI , Muhammet BAHADIR
In this study, changes in the coastlines that occurred due to global climate change and coastal erosion in K?z?l?rmak Delta were evaluated according to Bruun Rule and predicted by using existing data. The K?z?l?rmak Delta in the Central Black Sea Region, to the west of Samsun city center, The delta is located 69 km to the Black Sea coast and bordered by the Engiz Stream from the east, the Alaçam Stream from the west, and the Derbent Dam from the south. The purpose of this study is to determine the possible effects on the coastal zone of the K?z?l?rmak Delta due to sea level changes that might occur according to the Bruun Rule. In this context, it is aimed to determine changes that may be brought about in the natural environment elements of the delta such as sand dunes and lagoons due to changes that will experience sea level, and changes of land use classes such as agricultural areas, afforestation areas, meadows and pastures in the delta. For the purpose of the study; Firstly, by using the computer program called Google Earth Pro, the natural environment elements and land use patterns on the K?z?l?rmak Delta coasts were digitized and their areas were calculated through the satellite images of 2017-2018 years. Then, scenarios related to sea level changes were created and land losses that will occur on the delta coasts according to the Bruun rule were identified. According to Bruun's rule, the rise of 1 cm to be experienced in the vertical direction of sea level on the low shores zone with unconsolidated materials like sand and gravel, leads to a horizontal displacement of 100 cm in the shoreline of land direction. Accordingly, as a result of a 50 cm rise at sea level, a 3.6 km² sand dune area on the shores of K?z?l?rmak Delta is expected to be affected by sea invasion, by going to the inner parts of the sand dunes and affecting agricultural lands and settlements. Besides, it is expected that underground waters will be degraded due to the increase of the ground water level, which will change the ecological characteristics of the lagoons. Besides, it is expected that underground waters will be degraded due to the increase of the ground water level, which will change the ecological characteristics of the lagoons
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