지점 및 지역빈도분석에 의한 설계강우량의 추정

Estimation of Design Rainfall derived by At-site and Regional Frequency Analysis

  • 류경식 (충북대학교 농공학과) ;
  • 이순혁 (충북대학교 지역건설공학과) ;
  • 맹승진 (한국수자원공사 수자원연구원)
  • 발행 : 2004.05.01

초록

This study was conducted to derive the regional design rainfall by the regional frequency analysis based on the regionalization of the precipitation. For the estimation of the regional design rain(all, classification of the climatologically and geographically homogeneous regions should be preceded preferentially The optimal regionalization of the precipitation data were classified by the above mentioned conditions for all over the regions except Jeju and Ulleung islands in Korea. Relative root mean square error(RRMSE), relative bias(RBIAS) and relative reduction(RR) in RRMSE for the design rainfall were computed and compared between the regional and at-site frequency analysis. Consequently, optimal design rainfalls following the classified regions and consecutive durations were derived by the regional frequency analysis using GEV distribution which was identified to be more optimal one than the other applied distributions.

키워드