January average paleotemperatures in northwestern Yakutia

• Main Authors: Vasil'chuk, Yurij K, Vasil'chuk, Jessica Yurevna
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2020
• Subjects: air temperature; Batagay; ice‐wedge; Pleistocene; radiocarbon age; stable water isotopes; yedoma megaslump; Event label; Location; Reference/source; δ18O, water; Temperature, air, calculated; Age, comment; Mass spectrometer Finnigan Delta-V; Accelerator mass spectrometry AMS; Greenland; Reimer; GISP; glacier; Ice Sheet; Yakutia
• Online Access: https://dx.doi.org/10.1594/pangaea.918541; https://doi.pangaea.de/10.1594/PANGAEA.918541

January average paleotemperatures (tJ) in northwestern Yakutia reconstructed by the oxygen isotope composition of the ice wedge (δ¹⁸OIW) (by (Vasil'chuk, 2016) with additions).The dating was carried out at the Laboratory of Radiocarbon Dating and Electron Microscopy, Institute of Geography (preparation of counted matter), and at the Center for Applied Isotope Studies, University of Georgia, United States (direct measurements with an acceleration mass spectrometer). Radiocarbon calibration was conducted employing OxCal 4.3.2 and the IntCal13 curve (Stuiver et al., 2019; Reimer et al., 2013), with ranges rounded off by 5 years. From OxCal v.4.3.2 online.January average air temperatures were calculated using the formula from (Vasil'chuk, 1991).Stable isotope analyses were made at the isotope laboratory of the Geographical Department of Moscow University on a Finnigan Delta-V mass spectrometer with the standard gas-bench option (Prof. Yu. Vasil'chuk and Dr. N.Budantseva). The δ¹⁸О and δ²H values were expressed per mill (‰) as the deviation of the respective isotope ratios of the measured samples from the Vienna standard mean ocean water VSMOW (δ¹⁸О = 0 ‰, δ²H = 0 ‰) and Greenland Ice Sheet Precipitation GISP (δ¹⁸О = –24.76 ‰, δ²H = –189.5 ‰), as well as IAEA laboratory standards (IAEA 12, δ¹⁸О = –12.10 ‰, δ²H = –85.9 ‰; IAEA 13, δ¹⁸О = –33.35 ‰, δ²H = –257.2 ‰) and the domestic Moscow University standard of fresh snow from the Garabashi glacier in the Cuacasus (δ¹⁸О = –15.60 ‰, δ²H = –110.0 ‰). The precision of the measurements was 0.1 ‰ for δ¹⁸О and 0.6 ‰ for δ²H.