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제주도 지하수위의 변화와 지하수 함양부피

Variation of Groundwater Level and Recharge Volume in Jeju Island

  • 박원배 (제주발전연구원) ;
  • 김기표 (제주도특별자치도수자원본부) ;
  • 이준호 (제주대학교 지구해양과학과) ;
  • 문덕철 (제주도특별자치도수자원본부) ;
  • 김수정 (제주특별자치도보건환경연구원) ;
  • 고기원 (제주하이테크산업진흥원) ;
  • 방성준 (제주대학교 지구해양과학과) ;
  • 방익찬 (제주대학교 지구해양과학과)
  • Park, Won-Bea (Jeju Development Institute) ;
  • Kim, Gee-Pyo (Jeju-Special Self-Governing Province Water Resource Headquarter) ;
  • Lee, Joon-Ho (Department of Earth and Marine Science, Jeju National University) ;
  • Moon, Duk-Chul (Jeju-Special Self-Governing Province Water Resource Headquarter) ;
  • Kim, Soo-Jeong (Jeju-Special Self-Governing Province Research Institute of Public Health and Environment) ;
  • Koh, Gi-Won (Jeju Leading Industry Development for Economic Region) ;
  • Pang, Sung-Jun (Department of Earth and Marine Science, Jeju National University) ;
  • Pang, Ig-Chan (Department of Earth and Marine Science, Jeju National University)
  • 투고 : 2011.01.31
  • 심사 : 2011.05.02
  • 발행 : 2011.07.31

초록

The variation of groundwater level in Jeju Island is analyzed with the data of precipitation observed from 48 monitoring post and groundwater level observed from 84 monitoring wells during 2001 to 2009. The groundwater level rises in summer and falls in winter. The rise of groundwater level by precipitation is fast and small in the eastern region and slow and large in the western region. However, the speed of fall during the period of no rain is slower in the eastern region than in the western region. It tells that permeability is greater in the eastern region than in the western region. In this paper, we set up the base level of groundwater and calculate recharge volume between the base level and groundwater surface. During the period, the average recharge volume was $9.83{\times}10^9m^3$ and the maximum recharge volume was $2.667{\times}10^{10}m^3$ after the typhoon Nari. With these volume and the recharge masses obtained by applying the recharge ratio of 46.1%, estimated by Jeju Province (2003), the porous ratio over the whole Jeju Island is 16.8% in average and 4.6% in the case of maximum recharge volume just after typhoon Nari. A large difference in the two ratios is because that it takes time for groundwater permeated through the ground just after rain fall to fill up the empty porous part. Although the porous ratios over the whole Jeju Island obtained in this way has a large error, they give us the advantage to roughly estimate the amount of recharged groundwater mass directly from observing the groundwater level.

키워드

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피인용 문헌

  1. Temporal Variations of Submarine Groundwater Discharge (SGD) and SGD-driven Nutrient Inputs in the Coastal Ocean of Jeju Island vol.17, pp.4, 2012, https://doi.org/10.7850/jkso.2012.17.4.252
  2. Temporal and Spatial Variation of Nutrient Concentrations in Shallow Pore Water in Intertidal Sandflats of Jeju Island vol.45, pp.6, 2012, https://doi.org/10.5657/KFAS.2012.0704
  3. Impacts of Fresh and Saline Groundwater Development in Sungsan Watershed, Jeju Island vol.46, pp.7, 2013, https://doi.org/10.3741/JKWRA.2013.46.7.783