Özet:
Coastal areas are in a state of continual flux, due in part to seasonal factors and in part, to influences operating over longer periods of time. Discerning between these two types of causes remains a challenge. This study compares shoreline and nearshore bathymetry surveys conducted with an interval of fifteen years in order to determine the extent of medium-term coastal change. Results of surveys completed in 2001 and 2002 in Kilyos, Turkey are compared with data collected in December 2015, September 2016, and March 2017 in the same location using GNSS equipment and an echo sounder. Average shoreline recession has been estimated at 3-4 cm/yr. The predominant bar has been found to have moved seaward at a maximum rate of 1 m/yr since 2002. Mid-term nearshore erosion has been observed at approximately 100-125 m3/m.
