The cryostratigraphy of the Yedoma cliff of Sobo-Sise Island (Lena delta) reveals permafrost dynamics in the central Laptev Sea coastal region during the last 52 kyr
The present study examines the formation history and cryolithological properties of the late-Pleistocene Yedoma Ice Complex (IC) and its Holocene cover in the eastern Lena delta on Sobo-Sise Island. The sedimentary sequence was continuously sampled at 0.5 m resolution at a vertical Yedoma cliff star...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00055134 2024-09-15T17:54:21+00:00 The cryostratigraphy of the Yedoma cliff of Sobo-Sise Island (Lena delta) reveals permafrost dynamics in the central Laptev Sea coastal region during the last 52 kyr Wetterich, Sebastian Kizyakov, Alexander Fritz, Michael Wolter, Juliane Mollenhauer, Gesine Meyer, Hanno Fuchs, Matthias Aksenov, Aleksei Matthes, Heidrun Schirrmeister, Lutz Opel, Thomas 2020-12 electronic https://doi.org/10.5194/tc-14-4525-2020 https://noa.gwlb.de/receive/cop_mods_00055134 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054785/tc-14-4525-2020.pdf https://tc.copernicus.org/articles/14/4525/2020/tc-14-4525-2020.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-14-4525-2020 https://noa.gwlb.de/receive/cop_mods_00055134 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054785/tc-14-4525-2020.pdf https://tc.copernicus.org/articles/14/4525/2020/tc-14-4525-2020.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2020 ftnonlinearchiv https://doi.org/10.5194/tc-14-4525-2020 2024-06-26T04:41:37Z The present study examines the formation history and cryolithological properties of the late-Pleistocene Yedoma Ice Complex (IC) and its Holocene cover in the eastern Lena delta on Sobo-Sise Island. The sedimentary sequence was continuously sampled at 0.5 m resolution at a vertical Yedoma cliff starting from 24.2 m above river level (a.r.l.). The sequence differentiates into three cryostratigraphic units: Unit A, dated from ca. 52 to 28 cal kyr BP; Unit B, dated from ca. 28 to 15 cal kyr BP; Unit C, dated from ca. 7 to 0 cal kyr BP. Three chronologic gaps in the record are striking. The hiatus during the interstadial marine isotope stage (MIS) 3 (36–29 cal kyr BP) as well as during stadial MIS 2 (20–17 cal kyr BP) might be related to fluvial erosion and/or changed discharge patterns of the Lena river caused by repeated outburst floods from the glacial Lake Vitim in southern Siberia along the Lena river valley towards the Arctic Ocean. The hiatus during the MIS 2–1 transition (15–7 cal kyr BP) is a commonly observed feature in permafrost chronologies due to intense thermokarst activity of the deglacial period. The chronologic gaps of the Sobo-Sise Yedoma record are similarly found at two neighbouring Yedoma IC sites on Bykovsky Peninsula and Kurungnakh-Sise Island and are most likely of regional importance. The three cryostratigraphic units of the Sobo-Sise Yedoma exhibit distinct signatures in properties of their clastic, organic, and ice components. Higher permafrost aggradation rates of 1 m kyr−1 with higher organic-matter (OM) stocks (29 ± 15 kg C m−3, 2.2 ± 1.0 kg N m−3; Unit A) and mainly coarse silt are found for the interstadial MIS 3 if compared to the stadial MIS 2 with 0.7 m kyr−1 permafrost aggradation, lower OM stocks (14 ± 8 kg C m−3, 1.4 ± 0.4 kg N m−3; Unit B), and pronounced peaks in the coarse-silt and medium-sand fractions. Geochemical signatures of intra-sedimental ice reflect the differences in summer evaporation and moisture regime by higher ion content and less depleted ratios of stable ... Article in Journal/Newspaper Arctic Ocean Ice laptev Laptev Sea lena delta lena river permafrost The Cryosphere Thermokarst Siberia Niedersächsisches Online-Archiv NOA The Cryosphere 14 12 4525 4551 |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Wetterich, Sebastian Kizyakov, Alexander Fritz, Michael Wolter, Juliane Mollenhauer, Gesine Meyer, Hanno Fuchs, Matthias Aksenov, Aleksei Matthes, Heidrun Schirrmeister, Lutz Opel, Thomas The cryostratigraphy of the Yedoma cliff of Sobo-Sise Island (Lena delta) reveals permafrost dynamics in the central Laptev Sea coastal region during the last 52 kyr |
topic_facet |
article Verlagsveröffentlichung |
description |
The present study examines the formation history and cryolithological properties of the late-Pleistocene Yedoma Ice Complex (IC) and its Holocene cover in the eastern Lena delta on Sobo-Sise Island. The sedimentary sequence was continuously sampled at 0.5 m resolution at a vertical Yedoma cliff starting from 24.2 m above river level (a.r.l.). The sequence differentiates into three cryostratigraphic units: Unit A, dated from ca. 52 to 28 cal kyr BP; Unit B, dated from ca. 28 to 15 cal kyr BP; Unit C, dated from ca. 7 to 0 cal kyr BP. Three chronologic gaps in the record are striking. The hiatus during the interstadial marine isotope stage (MIS) 3 (36–29 cal kyr BP) as well as during stadial MIS 2 (20–17 cal kyr BP) might be related to fluvial erosion and/or changed discharge patterns of the Lena river caused by repeated outburst floods from the glacial Lake Vitim in southern Siberia along the Lena river valley towards the Arctic Ocean. The hiatus during the MIS 2–1 transition (15–7 cal kyr BP) is a commonly observed feature in permafrost chronologies due to intense thermokarst activity of the deglacial period. The chronologic gaps of the Sobo-Sise Yedoma record are similarly found at two neighbouring Yedoma IC sites on Bykovsky Peninsula and Kurungnakh-Sise Island and are most likely of regional importance. The three cryostratigraphic units of the Sobo-Sise Yedoma exhibit distinct signatures in properties of their clastic, organic, and ice components. Higher permafrost aggradation rates of 1 m kyr−1 with higher organic-matter (OM) stocks (29 ± 15 kg C m−3, 2.2 ± 1.0 kg N m−3; Unit A) and mainly coarse silt are found for the interstadial MIS 3 if compared to the stadial MIS 2 with 0.7 m kyr−1 permafrost aggradation, lower OM stocks (14 ± 8 kg C m−3, 1.4 ± 0.4 kg N m−3; Unit B), and pronounced peaks in the coarse-silt and medium-sand fractions. Geochemical signatures of intra-sedimental ice reflect the differences in summer evaporation and moisture regime by higher ion content and less depleted ratios of stable ... |
format |
Article in Journal/Newspaper |
author |
Wetterich, Sebastian Kizyakov, Alexander Fritz, Michael Wolter, Juliane Mollenhauer, Gesine Meyer, Hanno Fuchs, Matthias Aksenov, Aleksei Matthes, Heidrun Schirrmeister, Lutz Opel, Thomas |
author_facet |
Wetterich, Sebastian Kizyakov, Alexander Fritz, Michael Wolter, Juliane Mollenhauer, Gesine Meyer, Hanno Fuchs, Matthias Aksenov, Aleksei Matthes, Heidrun Schirrmeister, Lutz Opel, Thomas |
author_sort |
Wetterich, Sebastian |
title |
The cryostratigraphy of the Yedoma cliff of Sobo-Sise Island (Lena delta) reveals permafrost dynamics in the central Laptev Sea coastal region during the last 52 kyr |
title_short |
The cryostratigraphy of the Yedoma cliff of Sobo-Sise Island (Lena delta) reveals permafrost dynamics in the central Laptev Sea coastal region during the last 52 kyr |
title_full |
The cryostratigraphy of the Yedoma cliff of Sobo-Sise Island (Lena delta) reveals permafrost dynamics in the central Laptev Sea coastal region during the last 52 kyr |
title_fullStr |
The cryostratigraphy of the Yedoma cliff of Sobo-Sise Island (Lena delta) reveals permafrost dynamics in the central Laptev Sea coastal region during the last 52 kyr |
title_full_unstemmed |
The cryostratigraphy of the Yedoma cliff of Sobo-Sise Island (Lena delta) reveals permafrost dynamics in the central Laptev Sea coastal region during the last 52 kyr |
title_sort |
cryostratigraphy of the yedoma cliff of sobo-sise island (lena delta) reveals permafrost dynamics in the central laptev sea coastal region during the last 52 kyr |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/tc-14-4525-2020 https://noa.gwlb.de/receive/cop_mods_00055134 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054785/tc-14-4525-2020.pdf https://tc.copernicus.org/articles/14/4525/2020/tc-14-4525-2020.pdf |
genre |
Arctic Ocean Ice laptev Laptev Sea lena delta lena river permafrost The Cryosphere Thermokarst Siberia |
genre_facet |
Arctic Ocean Ice laptev Laptev Sea lena delta lena river permafrost The Cryosphere Thermokarst Siberia |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-14-4525-2020 https://noa.gwlb.de/receive/cop_mods_00055134 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00054785/tc-14-4525-2020.pdf https://tc.copernicus.org/articles/14/4525/2020/tc-14-4525-2020.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-14-4525-2020 |
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