Assessment of Prevention Performance Target Rainfall in Coastal Cities with Sea Level Rise

Abstract

The rise in average sea level due to climate change aggravates the vulnerability of coastal areas, increasing the likelihood of flooding due to erosion of outfall to the coast and rivers. Therefore, the design standards of defense facilities should be strengthened to address such increased risk of flooding. Accordingly, in this study, a plan to adjust the disaster prevention performance target rainfall for two research areas was selected in consideration of the regional characteristics of the coastal area and the average sea level rise predicted for 2050, and the disaster prevention performance target rainfall increased from at least 89% to up to 169%. Based on these results, it is believed that this study can serve as a basis for improving data on rainfall targets for disaster prevention performance with consideration of future sea level rise in coastal cities.

Potential Performance Assessment of Coastal Urban Sewer Network according to Sea Level Rise

“…강우 발생 시, 연안도시들은 우수유출수를 해안 및 인근 하천으로 방류한다. 상승된 조위 및 하천 수위는 우수관거 방류 및 해안저지대 침수와 같은 우수관망 시스템의 내수침수 발생위험을 증대시킨다 (Kim et al, 2021).…”