Stable water isotope data of ice wedges at the Batagay megaslump and the Adycha River, including other Siberian ice-wedge sites for regional comparison ...

Ice wedges in the Yana Highlands of interior Yakutia—the most continental region of the Northern Hemisphere—were investigated to elucidate changes in winter climate and continentality since the Middle Pleistocene. The Batagay megaslump exposes ice wedges and composite wedges that were sampled from t...

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Bibliographic Details
Main Authors: Opel, Thomas, Murton, Julian B, Wetterich, Sebastian, Meyer, Hanno, Ashastina, Kseniia, Günther, Frank, Grotheer, Hendrik, Mollenhauer, Gesine, Danilov, Petr P, Boeskorov, Vasily, Savvinov, Grigoriy N, Schirrmeister, Lutz
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 2019
Subjects:
Ice wedges
Permafrost
Siberian Arctic
stable water isotopes
winter climate reconstruction
Permafrost Research AWI_Perma
Polar Terrestrial Environmental Systems @ AWI AWI_Envi
Adycha
Arctic
Hanno
Ice
permafrost
wedge*
Yakutia
Online Access:https://dx.doi.org/10.1594/pangaea.904105
https://doi.pangaea.de/10.1594/PANGAEA.904105
Description
Summary:Ice wedges in the Yana Highlands of interior Yakutia—the most continental region of the Northern Hemisphere—were investigated to elucidate changes in winter climate and continentality since the Middle Pleistocene. The Batagay megaslump exposes ice wedges and composite wedges that were sampled from three cryostratigraphic units: the Lower Ice Complex of likely pre-Marine Isotope Stage (MIS) 6 age, the Upper Ice Complex (Yedoma) and the Upper Sand unit (both MIS 3 to 2). A terrace of the nearby Adycha River provides a Late Holocene (MIS 1) ice wedge that serves as a modern reference for interpretation. The stable-isotope composition of ice wedges in the MIS 3 Upper Ice Complex at Batagay is more depleted (mean δ18O about ‒35‰) than that from 17 other ice-wedge study sites across coastal and central Yakutia. This observation points to lower winter temperatures and, therefore, higher continentality in the Yana Highlands during MIS 3. Likewise, more depleted isotope values are found in Holocene wedge ice (mean ... : Supplement to: Opel, Thomas; Murton, Julian B; Wetterich, Sebastian; Meyer, Hanno; Ashastina, Kseniia; Günther, Frank; Grotheer, Hendrik; Mollenhauer, Gesine; Danilov, Petr P; Boeskorov, Vasily; Savvinov, Grigoriy N; Schirrmeister, Lutz (2019): Past climate and continentality inferred from ice wedges at Batagay megaslump in the Northern Hemisphere's most continental region, Yana Highlands, interior Yakutia. Climate of the Past, 15(4), 1443-1461 ...

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