Journal of Soil and Groundwater Environment (한국지하수토양환경학회지:지하수토양환경)

Korean Society of Soil and Groundwater Environment (한국지하수토양환경학회)
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Determination of Proper Probability Distribution for Groundwater Monitoring Stations in Jeju Island

제주도 지하수위 관측지점별 적정 확률분포형의 결정

  • Chung, Il-Moon (Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Nam, Woosung (National Drought Information Analysis Center, K-Water) ;
  • Kim, Min Gyu (Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Choi, Gian (Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Kim, Gee-Pyo (Jeju Special Self-Governing Province) ;
  • Park, Yun-Seok (Jeju Special Self-Governing Province)
  • 정일문 (한국건설기술연구원 수자원하천연구소) ;
  • 남우성 (K-Water 국가가뭄정보분석센터) ;
  • 김민규 (한국건설기술연구원 수자원하천연구소) ;
  • 최지안 (한국건설기술연구원 수자원하천연구소) ;
  • 김기표 (제주특별자치도) ;
  • 박윤석 (제주특별자치도)
  • Received : 2017.10.30
  • Accepted : 2018.01.29
  • Published : 2018.03.31
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Abstract

Comprehensive statistical analysis for the 127 groundwater monitoring stations in Jeju Island during 2005~2015 was carried out for the re-establishment of management groundwater level. Three probability distribution functions such as normal distibution, GEV (General Extreme Value) distribution, and Gumbel distribution were applied and the maximum likelihood method was used for parameter estimation of each distribution. AIC (Akaike information criterion) was calculated based on the estimated parameters to determine the proper probability distribution for all 127 stations. The results showed that normal distribution and Gumble distribution were found in 11 stations. Whereas GEV distribution were found in 105 stations, which covered most of groundwater monitoring stations. Therefore, confidence levels should be established in accord with the proper probability distribution when groundwater level management is determined.

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References

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