Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
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Development of Calculating Model for Hydrological eographic Parameters Using ArcGIS ModelBuilder

ArcGIS ModelBuilder를 이용한 수문학적 지형인자 산정 모형 개발

  • Moon, Changgeon (Kumoh National Institute of Technology, Civil & Environmental Engineering) ;
  • Lee, Jungsik (Kumoh National Institute of Technology, Civil & Environmental Engineering) ;
  • Shin, Shachul (Andong National University, Department of civil Engineering)
  • Published : 2013.02.01
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Abstract

The objective of this study is to develop a new GIS Model for calculating the hydrological geographic parameters efficiently using ArcGIS ModelBuilder. To evaluate the applicability of the new GIS Model, hydrological geographic parameters calculated by WMS and HEC-GeoHMS were compared with 5 geographic parameters from the new GIS Model. 18 reservoirs in Chungdo-gun were selected for this study. Hydrological geographic parameters used in this study are watershed area, stream length, watershed slope, stream slope and curve number. As the results of this study, the average relative error of 5 geographic parameters from all watersheds is shown more than 10.00%. In the results by the new GIS Model, hydrological geographic parameters are better efficiently and accurately to evaluate than those existing models.

본 연구의 목적은 ArcGIS ModelBuilder를 이용하여 효율적으로 수문학적 지형인자를 계산하기 위한 새로운 GIS 모형을 구축하는 것이다. 본 연구에서는 경상북도 청도군의 18개 저수지를 대상으로 WMS와 HEC-GeoHMS에 의해 수문학적 지형인자를 계산하고, 새로운 GIS 모형으로부터 산정된 지형인자와 비교함으로써 본 연구에서 개발한 모형의 적용성을 평가한다. 본 연구에서 사용한 수문학적 지형인자는 유역면적, 유로연장, 유역경사, 하상경사 및 유출곡선지수(CN)이다. 본 연구의 결과로서 평균상대오차는 10%를 상회하였으며, 새로운 GIS Model을 이용하여 기존의 방법에 비하여 보다 더 효과적이고 정확하게 수문학적 지형인자를 산정할 수 있다.

Keywords

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