the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Brief communication: Alternation of thaw zones and deep permafrost in the cold climate conditions of the East Siberian Mountains, Suntar-Khayata Range
Sergei Serikov
Anatoly Kirillin
Andrey Litovko
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.
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Robert Sysolyatin et al.
Status: open (extended)
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RC1: 'Comment on egusphere-2023-49', Lutz Schirrmeister, 18 Apr 2023
reply
1) Originality (novelty)
The manuscript to be reviewed here contains important results that have scarcely been published in this form from the region of the East Siberian Mountains. The manuscript fits very well into the concept of the journal TC.
2) Scientific quality (rigour)
Yes, the goal of the paper is clearly expressed in the introduction.
The note in the introduction to taliks " Thaw zones (taliks) in cold climate conditions with MAAT down to -12°C is extremely rare (Walvoord and Kurylyk, 2016)." is not sufficient in my view. And large parts of the Arctic have a MAAT of -12 °C (see attached figure "Annual_Average_Temperature_Map")
The measurement methods in the two boreholes and those of the air and ground temperature correspond to the modern and usual methods with regard to the measuring devices and sensor distances. Unfortunately, there is no more detailed information on the types of drilling equipment.
In some places, locations of relevant sites (“Pole of Cold Oymyakon and Verkhoyansk” and “the closest weather station”)could be better identified through coordinates or WMO identifications.
3) Significance (impact)
Such measuring points in the poorly accessible permafrost regions in the mountains are of great importance. The practical application for the permafrost regions also concerns the correlations with increased precipitation and its effects on permafrost.
4) Presentation quality
The results and conclusions as well as the figures and the table are very well presented. As a non-native speaker, I cannot say much about the appropriate use of the English language. I can state that the quality of the manuscript has been substantially enhanced by the inclusion of the editor's notes. A review by a native speaker would certainly be beneficial, though perhaps difficult at the moment.
Robert Sysolyatin et al.
Robert Sysolyatin et al.
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