短時間 確率計劃降雨波型의 推定 = Estimation of Probability Design Pattern for Short Duration Rainfall

국문 초록 (Abstract)

未計測 中小規模 河川流域에서 降雨量은 水工計劃의 중요한 資料이다. 短時間 計劃降雨波型을 推定하기 위하여 江陵地方의 每年最大 120分 降雨事象의 時刻別 강우량 時系列에 5乘根 變數變換 正規分布를 적용할 수 있음을 확인하고, 再現期間別 無次元 確率降雨波型을 提示하였다. 강릉지방의 재현기간에 따른 無次元 確率計劃降雨波型은 평균적으로 볼 때 1四分位에 集中된 單一 尖端降雨波型을 나타내고 있으나, 재현기간이 증가함에 따라 1사분위와 3사분위에 2개의 尖端降雨를 갖고 降雨持續期間의 後半部에 강우량이 집중되는 傾向을 나타낸다.

다국어 초록 (Multilingual Abstract)

The rainfall depths are important data for hydraulic engineering projects in an ungaged small watershed. To estimate probability rainfall patterns for short duration, annual maximum rainfall series for duration of 120 mimutes of Kangnung site were fitted in the 5-root transformed normal distribution. Dimensionless probability rainfall patterns are sugessted in each return period. These show the simple peak in first quartile for lower return period and the trend of concentration at the first part of rainfall duration. However, for upper return period that is changed into double peak in first and third quartile and into trend of concentration at the later part of rainfall duration.