Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Seasonal Variation of Hydraulic Gradient according to Rainfall in Unconfined Aquifer : Hyogyo-ri

자유면 대수층에서 강우량에 따른 수리경사 계절 변동 분석 : 효교리

  • Kyoung-deok Park (Institute of Environmental Geosciences, Pukyong National University) ;
  • Dong-hwan Kang (Institute of Environmental Geosciences, Pukyong National University) ;
  • Won Gi Jo (Greenhouse Gas Inventory and Research Center) ;
  • In-Kyu Shin (National Institute of Environmental Research) ;
  • Yun-Yeong Oh (National Institute of Environmental Research) ;
  • MoonSu Kim (National Institute of Environmental Research) ;
  • Hyun-Koo Kim (National Institute of Environmental Research)
  • Received : 2023.02.16
  • Accepted : 2023.04.26
  • Published : 2023.05.31
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Abstract

In this study, the hydraulic gradient was calculated using the groundwater level and rainfall observed in the Hyogyo-ri area for a year, and the change in the hydraulic gradient according to the rainfall was analyzed. It was found that the groundwater level increased as the rainfall increased in all groundwater wells in the research site, and the groundwater level rise decreased as the altitude of the groundwater well increased. The hydraulic gradient in the research site ranged from 0.016 to 0.048, decreasing during rainfall and increasing after the end of the rainfall. As the rainfall increased, the groundwater level rise in the low-altitude area was more than the high-altitude area, and the hydraulic gradient decreased due to the difference in groundwater level rise according to the altitude. Through this study, it was found that the influence of rainfall is dominant for the fluctuation of the hydraulic gradient in the unconfined aquifer.

Keywords

Acknowledgement

본 논문은 환경부의 재원으로 국립환경과학원의 농축산지역 지하수 중 질산성질소 수질관리 개선사업(Ⅴ)의 지원을 받아 수행하였습니다(NIER-2020-04-02-052). 본 논문은 "2021년도 교육부의 재원으로 한국기초과학지원연구원 국가연구시설장비진흥센터 사업(2021R1A6C101A415)"의 지원을 받아 수행하였습니다.

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