Development of Shallow-Depth Soil Temperature Estimation Model Based on Thermal Response in Permafrost Area
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- Development of Shallow-Depth Soil Temperature Estimation Model Based on Thermal Response in Permafrost Area
- Other Titles
- 관입형태의 TDR 기법을 이용한 활동층의 함수비 평가
- Park, Keunbo
Lee, Bang Yong
- Chemistry; Materials Science; Physics
- soil temperature; thermal response; cumulative soil temperature; soil temperature modelling
- Issue Date
- 박근보, et al. 2018. "Development of Shallow-Depth Soil Temperature Estimation Model Based on Thermal Response in Permafrost Area". APPLIED SCIENCES-BASEL, 8(10): 1886-1902.
- A soil temperature estimation model for increasing depth in a permafrost area in Alaska near the Bering Sea is proposed based on a thermal response concept. Thermal response is a measure of the internal physical heat transfer of soil due to transferred heat into the soil. Soil temperature data at different depths from late spring to the early autumn period at multiple permafrost sites were collected using automatic sensor measurements. From the analysis results, a model was established based on the relationship between the normalized cumulative soil temperatures (CRCST*i,m and CST*ud,m) of two different depths. CST*ud,m is the parameter of the soil temperature measurement at a depth of 5 cm, and CRCST*i,m is the parameter of the soil temperature measured at deeper depths of i cm (i = 10, 15, 20, and 30). Additionally, the fitting parameters of the mathematical models of the CRCST*i,m？CST*ud,m relationship were determined. The measured soil temperature depth profiles at a different site were compared with their predicted soil temperatures using the developed model for the model validation purpose. Consequently, the predicted soil temperatures at different soil depths using the soil temperature measurement of the uppermost depth (5 cm) were in good agreement with the measured results.
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