Water for future (물과 미래)

Korea Water Resources Association (한국수자원학회)
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The Influence of Lake Position on Groundwater Fluxes

호수의 위치가 지하수 Flux에 미치는 영향

  • 배상근 (계명대학교 공과대학 토목공학과)
  • Published : 1995.06.01
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Abstract

The purpose of this study is to investigate the influence of the position of lake upon groundwater fluxes on a lake watershed, and to provide the guidance for the monitoring network design to survey the exchange relations between grondwater and lake water. Three kinds of hypothetical flow through lakes, which are located at the upper, middle, and lower portion of a watershed were considered. And groundwater flow for each case was numerically simulated under three-dimensional steady state conditions. As a result, it can be shown that: (1) The exchange between lake and groundwater in the case where a lake is located at lower portion on watershed shows more active than that for a lake located at upper portion. (2) The amounts of inflow from groundwater to a lake are less than the amounts of discharge to groundwater in a target lake watershed. (3) The rate of inflow and outflow of groundwater to a lake is increased as the lake is located at upper portion of a watershed. (4) The horizontal flux of groundwater occurred on the lake bed is more significantly active than the vertical flux.

호수지역에서, 호수의 위치가 지하수 flux에 미치는 영향을 파악하고 지하수와 호소수와의 교류관계를 관측하기 위한 감시망 설계에 대한 지침을 제공하기 위하여 호수의 위치를 달리하는 3종류의 가상 지하수 시스템을 설계하였다. 각각의 지하수 시스템에 대하여 3차원정상 모의발생을 행하였으며 다음과 같은 결과를 얻었다: (1) 호수의 위치가 지하수 시스템의 상류측에 위치할 때 보다 하류측에 위치하는 경우가 호소수와 지하수와의 고류가 활발하다. (2) 대상지역의 호수는 존재하는 위치에 상관없이 지하수가 호수로 유출되는 양보다 호소수가 지하수를 함양하는 양이 많다. (3) 호수의 위치가 유역의 상류층에 위치 할수록 지하수 유출입량의 비가 커진다. (4) 호수의 바닥부분에서 지하수의 수평방향 flux에 의한 교류는 연직방향 flux에 의한 교류 보다 훨씬 더 활발하다.

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References

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