From the beginning of June to the beginning of August, 2011, permafrost investigation was carried out in the West Branch of the headwater of Heihe River. Along the section between hot water dabanya and Shimian mine fork of erga highway, with the decrease of altitude, 7 thermowells T1, T2, T3, T4, T7, T5 and T6 were successively arranged, and thermotubes were arranged for ground temperature monitoring. The instrument used is a thermistor thermometer developed by the State Key Laboratory of Permafrost Engineering, Institute of environment and Engineering in cold and dry areas, Chinese Academy of Sciences. The resistance value is measured by fluke multimeter, and then converted into temperature value with accuracy of ± 0.05 ° C. In order to reduce the impact of the road on the drilling temperature, it is required that the vertical distance between all the drilling holes and the road shall be at least greater than 100 m when determining the hole location. Except that T1 temperature hole of hot water Daban pass is located in the south of erga highway, the other six holes are located in the north of the highway.

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Zhang, T. (2014). Permafrost temperature profile in the upstream of the Heihe River Basin (2011). A Big Earth Data Platform for Three Poles, DOI: 10.3972/heihe.024.2014.db. CSTR: 18406.11.heihe.024.2014.db. (Download the reference： RIS | Bibtex )

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References literature

1.Liu J, Zhang T. Fundamental solution method for reconstructing past climate change from borehole temperature gradients[J]. Cold Regions Science and Technology, 2014, 102: 32–40. doi:10.1016/j.coldregions.2014.02.005 (View Details )

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