Past climate and continentality inferred from ice wedges at Batagay megaslump in the Northern Hemisphere’s most continental region, Yana Highlands, interior Yakutia
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 that have taken place since the Middle Pleistocene. The Batagay megaslump exposes ice wedges and composite wedges...
Published in: | Climate of the Past |
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Language: | English |
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European Geosciences Union
2019
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Online Access: | http://sro.sussex.ac.uk/id/eprint/85322/ http://sro.sussex.ac.uk/id/eprint/85322/1/__ad.susx.ac.uk_ITS_Group_gs_gs-research_SRO%20REPOSITORY_FACULTY%20UPLOADS_Julian%20Murton_Past%20climate%20and%20continentality%20-%20published%20MS.pdf https://doi.org/10.5194/cp-15-1443-2019 |
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ftunivsussex:oai:sro.sussex.ac.uk:85322 2023-07-30T04:07:26+02:00 Past climate and continentality inferred from ice wedges at Batagay megaslump in the Northern Hemisphere’s most continental region, Yana Highlands, interior Yakutia 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 2019-08-02 application/pdf http://sro.sussex.ac.uk/id/eprint/85322/ http://sro.sussex.ac.uk/id/eprint/85322/1/__ad.susx.ac.uk_ITS_Group_gs_gs-research_SRO%20REPOSITORY_FACULTY%20UPLOADS_Julian%20Murton_Past%20climate%20and%20continentality%20-%20published%20MS.pdf https://doi.org/10.5194/cp-15-1443-2019 en eng European Geosciences Union http://sro.sussex.ac.uk/id/eprint/85322/1/__ad.susx.ac.uk_ITS_Group_gs_gs-research_SRO%20REPOSITORY_FACULTY%20UPLOADS_Julian%20Murton_Past%20climate%20and%20continentality%20-%20published%20MS.pdf 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 and 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. pp. 1443-1461. ISSN 1814-9324 cc_by_4 Article PeerReviewed 2019 ftunivsussex https://doi.org/10.5194/cp-15-1443-2019 2023-07-11T20:41:16Z 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 that have taken place 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 those from 17otherice-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 δ18O about−29‰) compared to other sites in Yakutia. Ice-wedge isotopic signatures of the lower ice complex (mean δ18O about −33‰) and of the MIS 3–2 upper sand unit (mean δ18O from about−33‰ to−30‰) are less distinctive regionally. The latter unit preserves traces of fast formation in rapidly accumulating sand sheets and of postdepositional isotopic fractionation. Article in Journal/Newspaper Yakutia University of Sussex: Sussex Research Online Adycha ENVELOPE(134.773,134.773,68.217,68.217) Climate of the Past 15 4 1443 1461 |
institution |
Open Polar |
collection |
University of Sussex: Sussex Research Online |
op_collection_id |
ftunivsussex |
language |
English |
description |
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 that have taken place 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 those from 17otherice-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 δ18O about−29‰) compared to other sites in Yakutia. Ice-wedge isotopic signatures of the lower ice complex (mean δ18O about −33‰) and of the MIS 3–2 upper sand unit (mean δ18O from about−33‰ to−30‰) are less distinctive regionally. The latter unit preserves traces of fast formation in rapidly accumulating sand sheets and of postdepositional isotopic fractionation. |
format |
Article in Journal/Newspaper |
author |
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 |
spellingShingle |
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 Past climate and continentality inferred from ice wedges at Batagay megaslump in the Northern Hemisphere’s most continental region, Yana Highlands, interior Yakutia |
author_facet |
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 |
author_sort |
Opel, Thomas |
title |
Past climate and continentality inferred from ice wedges at Batagay megaslump in the Northern Hemisphere’s most continental region, Yana Highlands, interior Yakutia |
title_short |
Past climate and continentality inferred from ice wedges at Batagay megaslump in the Northern Hemisphere’s most continental region, Yana Highlands, interior Yakutia |
title_full |
Past climate and continentality inferred from ice wedges at Batagay megaslump in the Northern Hemisphere’s most continental region, Yana Highlands, interior Yakutia |
title_fullStr |
Past climate and continentality inferred from ice wedges at Batagay megaslump in the Northern Hemisphere’s most continental region, Yana Highlands, interior Yakutia |
title_full_unstemmed |
Past climate and continentality inferred from ice wedges at Batagay megaslump in the Northern Hemisphere’s most continental region, Yana Highlands, interior Yakutia |
title_sort |
past climate and continentality inferred from ice wedges at batagay megaslump in the northern hemisphere’s most continental region, yana highlands, interior yakutia |
publisher |
European Geosciences Union |
publishDate |
2019 |
url |
http://sro.sussex.ac.uk/id/eprint/85322/ http://sro.sussex.ac.uk/id/eprint/85322/1/__ad.susx.ac.uk_ITS_Group_gs_gs-research_SRO%20REPOSITORY_FACULTY%20UPLOADS_Julian%20Murton_Past%20climate%20and%20continentality%20-%20published%20MS.pdf https://doi.org/10.5194/cp-15-1443-2019 |
long_lat |
ENVELOPE(134.773,134.773,68.217,68.217) |
geographic |
Adycha |
geographic_facet |
Adycha |
genre |
Yakutia |
genre_facet |
Yakutia |
op_relation |
http://sro.sussex.ac.uk/id/eprint/85322/1/__ad.susx.ac.uk_ITS_Group_gs_gs-research_SRO%20REPOSITORY_FACULTY%20UPLOADS_Julian%20Murton_Past%20climate%20and%20continentality%20-%20published%20MS.pdf 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 and 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. pp. 1443-1461. ISSN 1814-9324 |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.5194/cp-15-1443-2019 |
container_title |
Climate of the Past |
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15 |
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4 |
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