Abstract
The experimental equipment was developed to observe the soil temperature and the effect on the infiltration of melting water. One-dimension advection-diffusion model was developed based on the experimental system and was analyzed based on the observed time series variation of soil temperature. Two different conditional methods provided the soil temperature of the steady state for the calculation. Optimization of the model parameter at the top of soil layer results in 0.99 for Nash-Sutcliffe efficiency coefficient in each case, and 2.81×10-6 and 2.03×10-6 m/s for the unsaturated hydraulic conductivity. Moreover, the one-dimension model showed the observed soil temperature in the past. The soil heat flux for snow season by the calculation varies from 5 to 15 W/m2, which are respectively equivalent to the melting rate from 2 to 3 mm/day. It was shown that the thermal diffusion conductivity was more effective than the hydraulic conductivity.
