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http://dx.doi.org/10.14481/jkges.2015.16.5.35

Fluctuation Features and Numerical Model for Underground Temperature in Shallow Subsurface Soil  

Jeong, Jaehoon (Well Tech Co.)
Kim, Gyoobum (K-water Institute)
Park, Hyoungki (Kongju National University)
Kim, Hyoungsoo (Jungwon University)
Kim, Taehyung (K-water Institute)
Publication Information
Journal of the Korean GEO-environmental Society / v.16, no.5, 2015 , pp. 35-42 More about this Journal
Abstract
This is conducted to observe underground temperature and to analyze its change affected by climate condition and soil infiltration in the mountainous area, Yesan region, Chungcheong-namdo province. Additionally, underground temperature change is also simulated using air temperature and soil thermal properties with a numerical model. Soil temperature monitoring data acquired from each depth, 20 cm, 50 cm, and 100 cm, indicates that the data within 50 cm in depth shows peak-shaped big fluctuation directly affected by air temperature and it at 100 cm has open-shaped small fluctuation. Underground temperature variation, a difference between high and low values, during monitoring period is weakly proportional to hydraulic conductivity of the sediment and it is assumed that water plays a part in delivering air temperature in soil. The underground temperature estimated by a numerical model is very similar to the observed data with an average value of 0.99 cross-correlation coefficient. From the result of this study, the aquifer unsaturated hydraulic conductivity of the soil and the groundwater recharge is likely to be able to estimate with underground temperature profile calculated using a numerical model.
Keywords
Unsaturated soil; Underground temperature; FEFLOW; Hydraulic conductivity; Groundwater recharge;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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