Analysis of Flooding Variation and Flood Inundation According to Increasing Rainfall

Abstract

As global warming has accelerated to weather in recent years, and The frequent floods are creating heavy rains and typhoons followed by considerable damage in Jeju. This study estimated design flood discharges and flood stage in Jeju, considering climate change in connection with RCP scenario, the 5th IPCC Report recently published. It also analyzed the period which might be subject to the risk of flooding in downstream of Oedo Stream. As a result, it has analyzed that there might be a risk of flooding when there were 80 years or more rainfall events in 35 years that rainfall would have increased by 10%, 69 years that 100 years or more heavy rain and rainfall would have increased by 20%, and 104 years that 100 years or more heavy rain and rainfall would have increased by 20%. It is expected that this study results of rainfall increasing trend caused by climate change will be helpful to minimize the damage of floods which will secure the future of Jeju.

Study on Variations in Flooding Volume According to Ratio of Rainfall to Projected Cross-Sectional Area of Photovoltaic Facilities

“…홍수량 변동특성은 강우량 증가에 따른 홍수량의 변동이 나, 이상기후 영향에 따른 확률강우량의 변화 특성, 강우량과 홍수량의 영향을 분석하였다 (Oh et al, 2009;Kang et al, 2015). 연강우량의 변동특성을 이동평균법에 의해 1년씩 증가하여 연최대 홍수량에 대한 빈도해석이나 설계홍수량 빈도해석 분석기법 중 LH-모멘트의 차수에 따른 설계홍수량 의 적정성을 분석하였다 (Wang, 1997a(Wang, , 1997bMaeng and Hwang, 2009).…”