• Title/Summary/Keyword: 단공희석시험

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Comparison between Passive Flux Meters and Borehole Dilution Tests to Estimate Groundwater Flux in a Karst Aquifer (플럭스미터와 단공희석시험을 이용한 카르스트 대수층 내 지하수 플럭스 측정 비교)

  • Lee, Juyeon;Yang, Minjune
    • Economic and Environmental Geology
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    • v.53 no.5
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    • pp.543-552
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    • 2020
  • In this study, we measured groundwater fluxes with a passive flux meter and a borehole dilution test in the Upper Floridan Aquifer. In addition, the feasibility of the passive flux meter is also evaluated within matrix and non-matrix zones. The results of the PFM (5.96 ± 1.75 cm/day) showed good agreement with those of the BHD (4.68 ± 2.99 cm/day) in matrix zones, whereas the results of the PFM (9.94 ± 0.90 cm/day) showed poor agreement with those of the BHD (1817.37 ± 1795.50 cm/day) in non-matrix zones. We assumed that the groundwater passes through the sorbent material inside the PFM. However, it could not pass through the sorbent when the groundwater flux is faster than 11 cm/day. The flow might bypass between monitoring well and the PFM. The PFM used in this study might be suitable for measuring the groundwater fluxes under 11 cm/day. Therefore, more extensive research is needed in the future to measure fast groundwater fluxes (> 11 cm/day).