The Journal of Engineering Geology (지질공학)

The Korean Society of Engineering Geology (대한지질공학회)
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Evaluation of Interactions Between Surface Water and Groundwater Based on Temperature, Flow Properties, and Geochemical Data

온도, 유동특성 및 지화학분석 자료를 이용한 지표수-지하수 연계특성 평가

  • Received : 2011.01.28
  • Accepted : 2011.03.08
  • Published : 2011.03.31
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Abstract

We examined the interactions between surface and groundwater through (1) flowmeter logging, (2) measurements of seasonal and vertical changes in temperature within a well, and (3) geochemical analyses of water samples from nine groundwater-monitoring wells. At two wells adjacent to a stream, subsurface water was found to flow from the stream to a surrounding alluvial fan, and the seasonal change in groundwater temperature is similar to those of surface water and air. Geochemical analyses at two wells indicated hydro-geochemical features affected by streamwater inflow, showing seasonal variations. Accordingly, these two wells are located in an area with active interaction between surface water and groundwater. The Thermochron I-button used in the present study is useful for this type of study of groundwater?surface water interaction because of its low cost and small size.

본 연구에서는 소하천변 충적층을 대상으로 9개 지하수 관측공내 유속 실험과 온도 계측을 통한 시간별, 심도별 온도 변화 추이 평가 및 지화학 분석 등을 통하여 지표수와 지하수간의 상호 작용에 대하여 분석하였다. 하천변에 근접한 2개 지하수 관측공은 타 관측공과 달려 지하수 유향이 하천에서 주변 충적층으로 향하고 있으며, 계절에 따른 온도 변화가 대기 및 하천과 유사하게 나타난다. 또한 이들 지점은 하천수의 영향을 받은 지화학 특성을 보일 뿐 아니라 계절에 따라 지화학 특성이 변화하는 등 지표수의 유입 유출이 활발한 지점에 해당한다. 본 연구에서 사용된 온도 측정 장치인 Thermochron I-button은 저비용의 소규모 장치로서 지표수와 지하수의 상호 작용 평가에 활용도가 높다.

Keywords

References

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