20 Mar 2023
 | 20 Mar 2023
Status: this preprint is open for discussion.

Brief communication: Alternation of thaw zones and deep permafrost in the cold climate conditions of the East Siberian Mountains, Suntar-Khayata Range 

Robert Sysolyatin, Sergei Serikov, Anatoly Kirillin, Andrey Litovko, and Maxim Sivtcev

Abstract. The Suntar-Khayata Range include numerous natural phenomena interacting or depending on permafrost conditions. Here, we examine some patterns of deep permafrost and talik zones on adjacent sites. A 210 m deep borehole in siltstone bedrock was equipped in July 2010 for temperature monitoring of the topmost 15 m and measurements of a deep permafrost temperature profile. The temperature curvature in the upper part has a bend which is consistent with at upper portion justify by climate warming and shows a steady-state linear geothermal profile below 85 m depth with a high geothermal heat flux. A shallow borehole situated at the river floodplain was used to investigate thaw zones temperature regime. Temperatures down to 6.7 m has been monitored at 5-min intervals during heavy rainfall and has had quite peculiar way. The thickness of the season freezing layer reach to 5.7 m, moreover ground temperature increases to 6 °C at 6.7 m depth by groundwater heat transfer. This study provides some new insight on the permafrost condition at one of the coldest places of Northern Hemisphere.

Robert Sysolyatin et al.

Status: open (extended)

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  • RC1: 'Comment on egusphere-2023-49', Lutz Schirrmeister, 18 Apr 2023 reply

Robert Sysolyatin et al.

Robert Sysolyatin et al.


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Short summary
By a deep and a shallow boreholes the permafrost features of Suntar-Khayata Range a of typical permafrost condition by possess data and discuss the current temperature change are decription. Also, infer the possible extent of thaw zones, conformation reason and imply to permafrost evolution. This study presents the general permafrost and applies possible ways for enhancements permafrost mapping of the East Siberian Mountains.