한강하류의 홍수 피해와 강우량의 관계에 관한 연구
Relationships between Rainfall and Flooding Disaster in the Downstream Areas of Han River
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초록
This study was aimed to investigate the relationship between flood damage and rainfall inthe downstream areas of Han River. We used flooding damage and daily rainfall data observed in the12 downstream areas during 2000-2012. Rainfall variables were analysed which include total rainfallover the basin of downstream areas in the Han River for f looding periods, maximum accumulativerainfall over 1hours, 3 hours, 6 hours and 12 hours, and rainfall in the upper regions of the Han River. Flooding damages of the study areas have significant positive correlations with rainfall variables. The mostsignificant variable that affect the amount of damage is 3 hour accumulative precipitation. It means thatthe more three-hour precipitation increases, the more the amount of damage also increases. We found thatthere is a high possibility of floods when a heavy rainfall day continues for more than 2 days by comparingheavy rainfall days between with and without flooding disasters. The possibility of flood decreases wheninterval of just before a heavy rainfall day and flooding period increase.
Abstract
This study was aimed to investigate the relationship between flood damage and rainfall inthe downstream areas of Han River. We used flooding damage and daily rainfall data observed in the12 downstream areas during 2000-2012. Rainfall variables were analysed which include total rainfallover the basin of downstream areas in the Han River for f looding periods, maximum accumulativerainfall over 1hours, 3 hours, 6 hours and 12 hours, and rainfall in the upper regions of the Han River. Flooding damages of the study areas have significant positive correlations with rainfall variables. The mostsignificant variable that affect the amount of damage is 3 hour accumulative precipitation. It means thatthe more three-hour precipitation increases, the more the amount of damage also increases. We found thatthere is a high possibility of floods when a heavy rainfall day continues for more than 2 days by comparingheavy rainfall days between with and without flooding disasters. The possibility of flood decreases wheninterval of just before a heavy rainfall day and flooding period increase.
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