Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
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Evaluation of Rain Gauge Distribution Characteristics by Altitude using Optimization Technique

최적화 기법을 통한 강우관측소의 고도별 분포특성 검토

  • Lee, Ji Ho (Department of Civil Engineering, Seoul National University of Science and Technology) ;
  • Kim, Jong Geun (Hydrological survey center, Han-River 6team) ;
  • Joo, Hong Jun (Department of Civil Engineering, Inha University) ;
  • Jun, Hwan Don (Department of Civil Engineering, Seoul National University of Science and Technology)
  • 이지호 (서울과학기술대학교 건설시스템공학과) ;
  • 김종근 (유량조사사업단 한강6팀) ;
  • 주홍준 (인하대학교 사회인프라공학과) ;
  • 전환돈 (서울과학기술대학교 건설시스템공학과)
  • Received : 2017.01.09
  • Accepted : 2017.02.06
  • Published : 2017.02.28
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Abstract

In this study, we estimate the NNI(Nearest Neighbor Index) which is considered altitude of rain gauge network as a method for evaluating appropriateness of spatial distribution and the current rain gauge network is evaluated. The altitude is divided by equal-area-ratio and optimal NNI within given basin condition is estimated using harmony search method for considering geographical conditions that vary from altitude to altitude. After calculating current state and optimal NNI for each altitude, the distribution of the rain gauge network is evaluated based on the difference between the two NNIs. As a result, it founds that the density of rain gauge networks is relatively thin as the altitude increases. Furthermore, it will be possible to construct an efficient rain gauge network if the characteristics of different altitudes are considered when a new rain gauge network is newly constructed.

본 연구에서는 강우관측소의 고도별 공간분포의 적정성을 평가하기 위한 방안으로 고도별 강우관측소의 최근린지수를 산정하고, 현재 강우관측소 공간분포의 적정성을 평가하였다. 등면적비를 이용하여 고도를 구분하고, 고도마다 다른 지형적인 조건을 고려하기 위하여 주어진 지형조건내에서 가능한 최대 NNI을 최적화 기법의 하나인 화음탐색법을 이용하여 산정하였다. 이와 같이 고도별로 현재 상태 및 최대 NNI를 산정한 후 이 두 값의 차이를 바탕으로 고도별로 강우관측소 분포를 평가하였다. 그 결과 고도가 높아질수록 공간분포가 상대적으로 취약함을 확인하였다. 추후 강우관측망을 신설할 경우 고도별 특성을 반영한다면 보다 효율적인 강우관측망의 구축이 가능할 것으로 판단된다.

Keywords

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