우리나라 조위관측소의 장기간 해수면 변화 분석

Abstract

Long period sea level changes were investigated at 17 tidal stations which are located around Korea peninsula with more than 25 years tide-gauge data. Regression analysis was applied to get general rising trend for long-term change(1960~2010) in mean sea level(MSL) at each station. The results showed that rising trends of MSL around Korea is higher than that of global MSL. The linear rising trend of MSL was relatively small along the western coast(on average 1.3mm/year), large along the southern and eastern coasts(on average 3.2 and 2.0 mm/year), and very large at around Jeju Island(on average 5.6 mm/year). The rising rate of around Jeju Island is about 3 times higher compared to the world ocean. According to recently IPCC report, the rate of sea level rising can be accelerating after 21st century. The interannual variation of sea level rising around Korea showed regional difference. This property of sea level rising should be considered to design the coastal structure in terms of coastal disaster prevention.