한국환경과학회지 (Journal of Environmental Science International)

  • 제24권4호
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  • Pages.403-414
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  • 2015
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  • 1225-4517(pISSN)
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  • 2287-3503(eISSN)
한국환경과학회 (The Korean Environmental Sciences Society)
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현장유출영상을 활용한 표면영상유속계(SIV)의 상관계수 분석

Analysis on Correlation Coefficient of Surface Image Velocimeter (SIV) Using On-site Runoff Image

  • 김용석 (제주대학교 토목공학과) ;
  • 양성기 (제주대학교 토목공학과) ;
  • 김동수 (단국대학교 토목환경공학과) ;
  • 김서준 (단국대학교 토목환경공학과)
  • Kim, Yong-Seok (Department of Civil Engineering, Jeju National University) ;
  • Yang, Sung-Kee (Department of Civil Engineering, Jeju National University) ;
  • Kim, Dong-Su (Department of Civil & Env. Engineering, Dankook University) ;
  • Kim, Seojun (Department of Civil & Env. Engineering, Dankook University)
  • 투고 : 2015.01.22
  • 심사 : 2015.04.13
  • 발행 : 2015.04.30
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초록

This study is daytime and nighttime runoff image data caused by heavy rain on May 27, 2013 at Oedo Water Treatment Plant of Oedo-Stream, Jeju to compute runoff by applying Surface image velocimeter (SIV) and analyzing correlation according to current. At the same time, current was comparatively analyzed using ADCP observation data and fixed electromagnetic surface current meter (Kalesto) observed at the runoff site. As a result of comparison on resolutions of daytime and nighttime runoff images collected, correlation coefficient corresponding to the range of 0.6~0.7 was 6.8% higher for nighttime runoff image compared to daytime runoff image. On the contrary, correlation coefficient corresponding to the range of 0.9~1.0 was 17% lower. This result implies that nighttime runoff image has lower image quality than daytime runoff image. In the process of computing current using SIV, a rational filtering process for correlation coefficient is needed according to images obtained.

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참고문헌

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