Korea's coastline has been experiencing a multitude of problems over the years. One of those problems is the erosion of South Koreas beaches, Nov 19 2021 Choi Jong-min a person who runs a guest house on Sacheonjin beach said that he was shocked by the high waves washing out portions of the beach that year. He says that the waves and water were the highest and closest they had ever been in the past 12 years. The beaches and coastline are suffering right now is partly because of fast economic expansion chewing away at them. This problem is only exacerbated with climate change which brings with it rising water levels and unpredictable weather. The eastern coastal provinces are the hardest hit by erosion, consisting of 25 out of 43 worst hit beaches. In 2019 the Sacheonjin beach was 40 meters wide, but during recent visits in 2021 the beach has narrowed by about 3 meters because of the waves. Because water engulfed the sand some businesses were forced to move elsewhere and alongside this steep dunes as high as 5 meters have formed, triggering safety concerns and getting in the way of tourism.
Coastal areas have also been affected by numerous hazards such as floods and storms due to the impact of climate change. As these coastal areas become more advanced and complex the impact and damage these hazards cause is also expected to increase. It is believed that by the middle of the century sea levels will rise by half a meter. To help mitigate this the city of Busan is planning on developing a neighborhood that floats, meaning that as the sea level rises so to does the neighborhood The way they would do this is by making buoyant concrete platforms that are anchored to the seabed so they don't float away. This will also allow them to rise and fall with the water yet have no one on the surface notice that they are moving. Alongside this other ways of preventing coastal hazards like identifying areas at risk of high flooding and then addressing them using machine learning algorithms.
