Yu. N. Goryachkin, L. V. Kharitonova
Marine Hydrophysical Institute of RAS, Sevastopol, Russia
Abstract
Analyzing the satellite images, the historical geographic maps and field observations, the coastline dynamics of the northwestern Crimea (the Bakalskaya Spit) are considered. It is shown that during the last 200 years, the western branch of the Bakalskaya Spit shifted to east. From 1984 to 1997 there were small shifts in the coastline position due to seasonal changes in the storm regime. The first separation of the island from the main spit body occurred in 1997. Further, the evolution of the Bakalskaya Spit distal was characterized by separation and renewal of an isthmus with a width decrease and a configuration change. In 2010, the distal part was finally separated from the main spit body and was transformated into an island. Until 2014, the width of the strait dividing the spit was rapidly increased, reaching 1 km in 2014. For 2010 – 2018 the formed island area was reduced by more than 0,2 km2. The island area is reduced by erosion, its western part; at the same time, the island itself shifts to northeast.
Keywords
coastline dynamics, satellite imagery, the Bakalskaya Spit, the Crimea
DOI
10.22449/2413-5577-2018-4-22-30