Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Rainfall Adjustment on Duration and Topographic Elevation

지속시간 및 표고에 따른 강우량 보정에 관한 연구

  • 엄명진 (연세대학교 대학원 토목공학과) ;
  • 조원철 (연세대학교 공과대학 사회환경시스템공학부) ;
  • 임해욱 (㈜서영엔지니어링)
  • Published : 2007.07.31
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Abstract

The objective of this study is to develop a method of rainfall adjustment on duration and topographic elevation for rainfall data in Jejudo. The method of rainfall adjustment is based on the polynomial regression analysis for the hourly rainfall data and the distribution of observatories of korea meteorological administration. As the results of modeling have shown, duration and rainfall are more correlated than topographic elevation and rainfall, and the model which considers only an elevation exaggerates the amount of rainfall adjustment. Hence the model of duration-elevation-rainfall is more competitive to the natural rainfall event than the model of topographic elevation-rainfall. However this model require to supplement a small number of rainfall observatories and short observed period.

본 연구에서는 제주도내 강우 관측자료를 활용하여 강우지속시간 및 표고에 따른 강우량 보정기법을 개발하였다. 이를 위해 기상청 관측소(기상관서:4개소, AWS:13개소)의 시우량 자료와 표고별 분포를 이용하여 표고와 강우지속 시간에 대한 다항회귀분석을 수행하였다. 회귀된 모형의 평가에서 강우지속시간은 표고보다 강우량과 좋은 상관성을 나타내었으며, 강우량 보정시 표고만을 고려한 모형은 과대한 보정을 하였다. 따라서 수자원 설계시 기존의 표고만을 고려한 모형보다 본 연구에서 제시된 강우지속시간 및 표고를 동시에 고려한 모형을 적용할 경우 실제 강우 사상을 더욱 잘 반영할 것으로 판단된다. 그러나 본 연구에서 제시된 모형은 향후 부족한 표고별 강우 관측소와 짧은 강우 관측기간 등에 대한 보완이 필요하다.

Keywords

References

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