14 KEI RESEARCH BRIEFS RESEARCH BRIEF 4 CHO, KWANGWOO I SENIOR RESEARCH FELLOW, DIVISION OF ADAPTATION RESEARCH National Assessment on Sea Level Rise Impact of Korean Coast in the Socioeconomic Context sea-level rise simulations show that 74.7% fishing seaports will become substandard by 2050. physical and social vulnerability of coastal cities were assessed and some resilience-building policy measures were presented accordingly the purpose of this study is 1) to assess vulnerabilities of various coastal socioeconomic activities, 2) to identify the degree of socioeconomic vulnerability based on type and region, and 3) to develop adaptation strategies and identify future challenges for sea level rise assuming the realization of IPCC's representative concentration pathway(rcp)greenhouse gas emission scenarios caused by global warming in the 21st century. this study focuses on assessing the vulnerability of socioeconomic activities in the korean coastal zone to the sea level rise caused by global warming in the 21st century, and suggests appropriate adaptation strrategies. thr primary socioeconomic systems selected for vulnerability assessments in this study include:flood areas, population, land coverage, housing, and public facilities for the first year(2011); harbors, coastal embankment, industrial complexes, transportation facilities, landfills, environmental facilities, large-scale development projects (environmental impact assesment projects) and overseas adaptive case studies, and integrated coastal management and adaptation case studies in the second year(2012); and fishing ports, river drainage, impact assessment for coastal wetlands, techincal and systematic adaptive methods, and development of a framework for increased integrated adaptive capacity in the third year(2013).the third year study results are summarized as follows. ● Assessment of impact on coastal protection facilities (fishing seaports) the result of vulnerability assessment shows that 81 of 109 national fishing ports are highlt vulnerable, and 65.5% of 647 facilities of the 81 fishing ports are currently sub-standard. as the sea level rises, the vulnerability of seaports increases to 70.9% by 2050 and to 84.9% by 2100. in terms of total breakwater facilities length(52,467.1m), 69.3% of the total length is currently sub-standard. this figure increases to 74.7% by 2050 and 87.1% by 2100. the primary screening was conducted to assess the vulnerability of fishing ports.,more intensive studies are needed to consider sea level rise, wave, and storm surge in relation width geographic and bathymetric characteristics. ● Assessment of impact on coastal drainage facilities this study assessed the impact of sea level rise on river drainage near coasts and flood risks of draingae facilities. the river drainage impact assessment was conducted at west nakdong river controlled by the barrage, sokcho and mokpo width three different sea-level rise scenarios. the flooded area of west nakdong river increases to 7.40%(171 ha), 22.48%(441 ha), and 23.62%(467 ha) by 2100 for sea-level rise scenarios Ⅰ, Ⅱ, and Ⅲ, respectively. in the case of sokcho, the flooded area enlarges to 140 ha, 140 ha, and 110 ha by 2100 for sea-level rise scenarios Ⅰ, Ⅱ, and Ⅲ, respectively. the flooded area of mokpo expands to 20.32%(90 ha), 53.76%(186 ha), and 27.80% (96ha), 53.76%(186ha), 27.80%(96ha) by 2100 for sea-level rise scenarios Ⅰ, Ⅱ, and Ⅲ, respectively ● coastal wetlang impact assessment for the impact assessment of wetland due to sea level rise, the suncheon bay tidal marsh, which has an area of 16.6㎢, was selected to estimate the loss and movable area of tidal marsh. the estimated loss and movable area by 2100 for 1.36 m sea level rise are 47.6%(7.9㎢) of whole areas and 1.01 ㎢, respectively. from the analysis,