There is a need to analyze unconfined groundwater behavior since the demand of groundwater use has been increasing. While unconfined groundwater temperature is tend to be affected by air temperature, it is hard to find an empirical study in South Korea. In this research, we try to determine the relationship between daily average air temperature and daily average groundwater temperature by time-sequential analysis of groundwater monitoring wells in Galshin basin in Yesan-Gun, Chungcheongnam-Do. In addition, models to estimate groundwater temperature from air temperature were developed. In this research 101-day moving average method with measured air temperature is used to estimate groundwater temperature. To verify the developed model, estimated values of average groundwater temperature with 101 moving average are compared to the measured data from September 10 2007 to September 9 2008. And, Nash-Stucliff Efficiency and Coefficient of Determination were 0.970 and 0.976, therefore it was concluded that the model allowing groundwater temperature estimation from air temperature is with reasonable applicability.

I. 서 론
 II. 자료 및 방법
  1. 자료
  2. 방법
 III. 결과 및 고찰
  1. 일평균 지하수온과 일평균 대기온도의 시계열특성분석 결과
  2. 일평균 지하수온과 일평균 대기온도의 이동평균추정모형 개발
  3. 일평균 대기온도의 이동평균값에 의한 지하수온예측모형 검증
 IV. 결 론
 References

• 박승기(공주대학교 지역건설공학과) | Park Seung Ki
• 정남수(공주대학교 지역건설공학과) | Jung Nam Su Corresponding author