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Appl. Sci. 2018, 8(10), 1886; https://doi.org/10.3390/app8101886

Development of Shallow-Depth Soil Temperature Estimation Model Based on Thermal Response in Permafrost Area

1
Division of Polar Climate Sciences, Korea Polar Research Institute, Incheon 21990, Korea
2
Department of Electronics and Communication Eng., Hanyang University ERICA Campus, 55 Hanyangdaehak-ro, Sanrok-gu, Ansan, Gyeonggi-do 15588, Korea
3
Department of Civil and Environmental Engineering, Incheon National University, Incheon 22012, Korea
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 12 September 2018 / Revised: 8 October 2018 / Accepted: 9 October 2018 / Published: 11 October 2018
(This article belongs to the Section Environmental and Sustainable Science and Technology)
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Abstract

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. View Full-Text
Keywords: soil temperature; thermal response; cumulative soil temperature; soil temperature modelling soil temperature; thermal response; cumulative soil temperature; soil temperature modelling
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Park, K.; Yang, H.; Lee, B.Y.; Kim, D. Development of Shallow-Depth Soil Temperature Estimation Model Based on Thermal Response in Permafrost Area. Appl. Sci. 2018, 8, 1886.

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