- Determination of Proper Probability Distribution for Groundwater Monitoring Stations in Jeju Island
- Chung, Il-Moon;Nam, Woosung;Kim, Min Gyu;Choi, Gian;Kim, Gee-Pyo;Park, Yun-Seok;
- Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology;National Drought Information Analysis Center, K-Water;Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology;Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology;Jeju Special Self-Governing Province;Jeju Special Self-Governing Province;
- 제주도 지하수위 관측지점별 적정 확률분포형의 결정
- 정일문;남우성;김민규;최지안;김기표;박윤석;
- 한국건설기술연구원 수자원하천연구소;K-Water 국가가뭄정보분석센터;한국건설기술연구원 수자원하천연구소;한국건설기술연구원 수자원하천연구소;제주특별자치도;제주특별자치도;
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.
Keywords: Jeju Island;Management groundwater level;Probability distribution;
This Article