한국지구과학회지 (Journal of the Korean earth science society)

  • 제38권7호
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  • Pages.570-580
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  • 2017
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  • 1225-6692(pISSN)
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  • 2287-4518(eISSN)
한국지구과학회 (The Korean Earth Science Society)
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전남 신안군 지역의 지하수 수질에 대한 해수의 영향 분석

An Analysis of Seawater Effect on Groundwater Quality, in the Region of Sinan-gun area, Jeonam, Korea

  • 신경선 (이화여자대학교 과학교육과) ;
  • 고동찬 (한국지질자원연구원 지하수생태연구센터) ;
  • 이정훈 (이화여자대학교 과학교육과)
  • Shin, Kyungsun (Department of Science Education, Ewha Womans University) ;
  • Koh, Dong-Chan (Korea Institute of Geoscience and Mineral Resources) ;
  • Lee, Jeonghoon (Department of Science Education, Ewha Womans University)
  • 투고 : 2017.07.27
  • 심사 : 2017.12.11
  • 발행 : 2017.12.31
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초록

기존에 국내에서 지하수에 대한 해수의 영향 연구가 거의 이루어지지 않았던 다도해상의 도서 지역인 전라남도 신안군의 지하수 수질 특성을 평가하였다. 지하수에 대한 해수의 영향을 평가하기 위해 지하수의 현장 수질 측정과 주요 용존성분 등을 포함한 수리지구 화학적 인자를 조사하였다. 총 4회에 걸친 현장 수질 측정 결과, $500{\mu}S/cm$ 이상의 높은 전기전도도 값을 나타내는 관정은 163개 중 74개로 나타났으며, 용존이온 분석을 통한 $Cl^-/HCO_3{^-}$ 몰 비로 지하수의 해수 영향을 분석한 결과 심한 영향 및 매우 심한 영향을 의미하는 2.8 이상의 값을 갖는 시료가 74개 중 40개에 해당하였다. 지하수 수질유형의 경우, 직접적인 해수의 영향을 받는 것으로 판단되는 Na-Cl 유형과 해수침투에 의한 지하수 진화단계에서 Na-Cl 이전 유형인 Ca-Cl 유형은 암반지하수의 경우 각각 35.3, 44.1%, 충적층/풍화대 지하수의 경우 52.5, 45%를 차지하였다. 이러한 대수층별 해수의 영향 특성은 각 관정의 해안에서의 거리, 양수량, 조석 등의 영향을 받을 것으로 판단된다.

The purpose of the study was to evaluate the groundwater quality of Sinan-gun, Jeollanam-do, an island located in the southern part of the Korean peninsula where the effect of seawater on the groundwater quality had not been investigated in the past. In order to evaluate its effect, the hydrogeological parameters including groundwater quality and major dissolved components were investigated. The water quality was measured four times in the field, and 74 of 163 samples that showed the high conductivity value of more than $500{\mu}S/cm$ and the influence of seawater on the groundwater were analyzed by $Cl^-/HCO_3{^-}$ molar ratio. The results showed that, 40 samples out of 74 were found to have a value of 2.8 or more, indicating severe and very severe effects. According to the type of groundwater quality, the ratio of samples belonging to Na-Cl type, which is considered to be influenced by the direct seawater, is 35.3% for bedrock groundwater and 52.5% for weathered zone and alluvial groundwater. In the evolution stage of groundwater due to seawater infiltration, the type of Ca-Cl prior to the Na-Cl type is 44.1% in bedrock groundwater and 45% in weathered zone and alluvial groundwater. The effect of sea water on the aquifer is likely to be influenced by distance from the shore, pumped water, and tide.

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참고문헌

  1. Barbara, A.D. and Harry, I.N., 1984, Relation ships between groundwater silica, total dissolved solids, and specific electrical conductivity, National Ground Water Association, 22(1), 80-85. https://doi.org/10.1111/j.1745-6584.1984.tb01479.x
  2. Chang, S.W., 2014, A review of recent research into coastal groundwater problems and associated case studies. The journal of engineering geology, 24(4), 597-608. (in Korean) https://doi.org/10.9720/kseg.2014.4.597
  3. Cho, S.H., Kee, W.S., Kho, D.C. et al., Groundwater survey report of Sinan Area. Ministry of Construction and Transportation, 2005-12, 234 p. (in Korean)
  4. El, M.M., Bou, S.B., Darwish, T., and Atallah, T., 2006, Comparison of different indicators for groundwater contamination by seawater intrusion on the Lebanese Coast. Water Resour Manag, 20, 161-180. https://doi.org/10.1007/s11269-006-7376-4
  5. Freeze, F.A. and Cherry, J.A., 1979, Groundwater. Prentice-Hall, Englewood Cliffs, New Jersey, 102 p.
  6. Hem, J.D., 1985, Study and interpretation of the chemical characteristics of natural water. Water Supply Paper 2254, U.S. Geological Survey.
  7. Hwang, S.H., Park, K.G., Shin, J.H., and Lee, S.K., 2007, Relationship between the groundwater resistivity and NaCl equivalent salinity in western and southern coastal areas, Korea. Geophysics and Geophysical Exploration, 10(4), 361-368. (in Korean)
  8. Hyun, Y.J., Kim, Y.S., Lee, H.J., and Lee, J.Y., 2013, Environmental Impacts of Deep Underground Space Development in Urban Areas and Policy Suggestions, Korea Environment Institute, 2013-16, 128 p. (in Korean)
  9. Hyun, Y.J. and Moon, H,J., 2014, Preliminary Study on Environmental Values of Groundwater Resources in Korea, Korea Environment Institute, 2014-10, 35 p. (in Korean)
  10. Jeen, S.W., Kim, J. m., Ko, K.S., Yum, B.W., and Chang, H.W., 2001, Hydrogeochemical characteristics of groundwater in a mid-western coastal aquifer system, Korea. Geosciences Journal, 5(4), 339-348. https://doi.org/10.1007/BF02912705
  11. Jung, Y.Y., Koh, D.C., Yu, Y.J., and Ko, K.S., 2010, Analysis of groundwater flow systems for springs in the southern slope of Jeju Island using hydrogeochemical parameters. Journal of the Geological Society of Korea. 46(3), 253-273.
  12. Kim, C.S., Kim, K.S., Bae, D.S., and Song, S.H., 1997, Hydrogeological Characteristics of Seawater Intrusion in the Coastal Area. Journal of the Korean Society of Groundwater Environment, 4(2), 61-72. (in Korean)
  13. Kim, H.J., Hamm, S.Y., Cheong, J.Y., and Lee, J.H., 2009a, Characteristics of Groundwater Contamination Caused by Seawater Intrusion and Agricultural Activity in Sacheon and Hadong Areas, Republic of Korea. Economic and Environmental Geology, 42(6), 575-589. (in Korean)
  14. Kim, J.H., Kim, R.H., Lee, J., and Chang, H.W., 2003, Hydrogeochemical characterization of major factors affecting the quality of shallow groundwater in the coastal area at Kimje in South Korea. Environmental Geology, 44, 478-489. https://doi.org/10.1007/s00254-003-0782-5
  15. Kim, J.H., Lee, J.H., Cheong, T.J., Kim, R.H., Koh, D.C., Ryu, J.S., and Chang, H.W., 2005, Use of time series analysis for the identification of tidal effect on groundwater in the coastal area of Kimje, Korea. Journal of Hydrology, 300, 188-198. https://doi.org/10.1016/j.jhydrol.2004.06.004
  16. Kim, K.H., Shin, J.Y., Koh, E.H., Koh, G.W., and Lee, K.K., 2009b, Sea Level Rise Around Jeju Island due to Global Warming and movement of Groundwater/seawater Interface in the Eastern Part of Jeju Island. Journal of Soil and Groundwater Environment, 14(3), 68-79. (in Korean)
  17. Kim, R.H., Kim, J.H., Ryu, J.S., and Chang, H.W., 2006, Salinization properties of a shallow groundwater in a coastal reclaimed area, Yeonggwang, Korea. Environmental Geology, 49, 1180-1194. https://doi.org/10.1007/s00254-005-0163-3
  18. Kim, Y.J., Lee, K.S., Koh, D.C., Lee, D.H., Lee, S.G., Park, W.B., Koh, G.W., and Woo, N.C., 2003b, Hydrogeochemical and isotopic evidence of groundwater salinization in a coastal aquifer: a case study in Jeju volcanic island, Korea. Journal of Hydrology, 270, 282-294. https://doi.org/10.1016/S0022-1694(02)00307-4
  19. Lee, B.J. and Hwang, S.H., 2008, Evaluation of characteristics of seawater intrusion based on the groundwater fluctuations: Baksu area, Yeonggwang-gun. Journal of the Geological Society of Korea, 44(2), 232-240. (in Korean)
  20. Lee, J.H., Kim, R.H., and Chang, H.W., 2002, Interaction between groundwater quality and hydraulic head in an area around an underground LPG storage cavern, Korea. Environmental Geology, 13, 901-912.
  21. Lee, J.H., Kim, J.H., Kim, H.m., and Chang, H.W., 2007, Statistical approach to determine the salinized ground water flow path and gydrogeochemical features around the underground LPG cavern, Korea. Hydrological Processes, 21, 3615-3626. https://doi.org/10.1002/hyp.6589
  22. Lee, J.Y., Lee, G.S., and Song, S.H., 2007a, An interpretation of changes in groundwater level and eletrical conductivity in monitoring wells in Jeju Island. Journal of the Korean Earth Science Society, 28(7), 925-935. https://doi.org/10.5467/JKESS.2007.28.7.925
  23. Lee, J.Y. and Song, S.H., 2007, Groundwater chemistry and ionic ratios in a western coastal aquifer of Buan, Korea: implication for seawater intrusion. Geosciences Journal, 11(3), 259-270. https://doi.org/10.1007/BF02913939
  24. Lee, Y.H., Hong, W.H., and Lee, J.S., 2014, The vulnerability assessment of water supply through the analysis of emergency water shortage in cut off water supply-prone island area. Journal of the Architectural Institute of Korea Planning & Design, 30(1), 253-260. (in Korean) https://doi.org/10.5659/JAIK_PD.2014.30.1.253
  25. Na, C.K. and Son, C.I., 2005, Groundwater quality and pollution characteristics at Seomjin river basin: Pollution source and risk assessment. Economic and Environmental Geology, 35(3), 261-272. (in Korean)
  26. Park, Y.Y., Lee, J.Y., Kim, J.H., and Song, S.H., 2012, National scale evaluation of groundwater chemistry in Korea coastal aquifers: evidences of seawater intrusion. Environmental Earth Sciences, 66, 707-718. https://doi.org/10.1007/s12665-011-1278-3
  27. Revelle, R., 1941, Criteria for recognition of sea water in groundwater. Transaction of American Geophysical Union, 22, 593-597. https://doi.org/10.1029/TR022i003p00593
  28. Shin, I.H., Park, C.Y., Ahan, K.S., and Jeong, Y.J., 2002, Hydrogeochemistry of Groundwaters at the Gogum island area in Jeonnam, Korea. Journal of the Korean Earth Science Society, 23(6), 474-485. (in Korean)
  29. Song, S.H., Lee, J.Y., and Yi, M.J., 2007, Evaluation of long-term data obtained from seawater intrusion monitoring network using variation type analysis. Journal of the Korean Earth Science Society, 28(4), 478-490. (in Korean) https://doi.org/10.5467/JKESS.2007.28.4.478
  30. Todd, D.K., 1959, Ground Water Hydrology. John Wiley & Sons, Inc., New York.
  31. Youn, J.S. and Park, S.W., 1998, Hydrochemical characteristics of spring water in Cheju island. Journal of the Korean Society of Groundwater Environment, 5(2), 66-79. (in Korean)

피인용 문헌

  1. A study on propagation of uncertainties for a mixing ratio calculation by seawater intrusion vol.54, pp.5, 2018, https://doi.org/10.14770/jgsk.2018.54.5.579