Abstract Accelerator mass spectrometry dating of organic microinclusions was performed on eight samples from the lower part of the thick Pleistocene syngenetic ice wedges exposed in the Batagay mega-slump in northern Yakutia, the upper reaches of the Yana River (67.58° N, 134.77° E). Radiocarbon dating suggests that ice wedge growth took place between 38 120 and 45 570 14 C BP (42.1–49 cal ka BP). The Late Pleistocene mean January air temperatures from 42 to 49 cal ka BP have been reconstructed from the isotope data for the Batagay section and a number of reference sections in northwestern Yakutia. The lowest mean January air temperature of –51°С for this period was in Batagaika, whereas in the areas located 500–600 km to the north, it was 5–7°C higher. This is accounted for by the influence of the Yakutian anticyclone in winter during the Late Pleistocene from 42 to 49 cal ka BP, which was as pronounced at that time as it is now.

中文翻译：

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雅库特 Batagay Yedoma 下部冰楔中有机微包裹体的新 AMS 日期

摘要 对雅纳河上游（北纬 67.58°，东经 134.77 ）。放射性碳测年表明冰楔生长发生在 38 120 和 45 570 14 C BP (42.1–49 cal ka BP) 之间。已根据巴塔盖剖面和雅库特西北部的一些参考剖面的同位素数据重建了晚更新世 1 月平均气温从 42 到 49 cal ka BP。在此期间，巴塔盖卡的 1 月平均气温最低，为 –51°С，而在北部 500-600 公里的地区，气温高出 5-7°C。