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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2020
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ftdoajarticles:oai:doaj.org/article:bb2a755dc2754e1e9b5efa390eafe3ab 2023-05-15T15:19:11+02:00 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 S. Wetterich A. Kizyakov M. Fritz J. Wolter G. Mollenhauer H. Meyer M. Fuchs A. Aksenov H. Matthes L. Schirrmeister T. Opel 2020-12-01T00:00:00Z https://doi.org/10.5194/tc-14-4525-2020 https://doaj.org/article/bb2a755dc2754e1e9b5efa390eafe3ab EN eng Copernicus Publications https://tc.copernicus.org/articles/14/4525/2020/tc-14-4525-2020.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-14-4525-2020 1994-0416 1994-0424 https://doaj.org/article/bb2a755dc2754e1e9b5efa390eafe3ab The Cryosphere, Vol 14, Pp 4525-4551 (2020) Environmental sciences GE1-350 Geology QE1-996.5 article 2020 ftdoajarticles https://doi.org/10.5194/tc-14-4525-2020 2022-12-31T12:11:13Z 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 ... Article in Journal/Newspaper Arctic Arctic Ocean Ice laptev Laptev Sea lena delta lena river permafrost The Cryosphere Thermokarst Siberia Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Laptev Sea Glacial Lake ENVELOPE(-129.463,-129.463,58.259,58.259) The Cryosphere 14 12 4525 4551 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 S. Wetterich A. Kizyakov M. Fritz J. Wolter G. Mollenhauer H. Meyer M. Fuchs A. Aksenov H. Matthes L. Schirrmeister T. Opel 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 |
Environmental sciences GE1-350 Geology QE1-996.5 |
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 ... |
format |
Article in Journal/Newspaper |
author |
S. Wetterich A. Kizyakov M. Fritz J. Wolter G. Mollenhauer H. Meyer M. Fuchs A. Aksenov H. Matthes L. Schirrmeister T. Opel |
author_facet |
S. Wetterich A. Kizyakov M. Fritz J. Wolter G. Mollenhauer H. Meyer M. Fuchs A. Aksenov H. Matthes L. Schirrmeister T. Opel |
author_sort |
S. Wetterich |
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://doaj.org/article/bb2a755dc2754e1e9b5efa390eafe3ab |
long_lat |
ENVELOPE(-129.463,-129.463,58.259,58.259) |
geographic |
Arctic Arctic Ocean Laptev Sea Glacial Lake |
geographic_facet |
Arctic Arctic Ocean Laptev Sea Glacial Lake |
genre |
Arctic Arctic Ocean Ice laptev Laptev Sea lena delta lena river permafrost The Cryosphere Thermokarst Siberia |
genre_facet |
Arctic Arctic Ocean Ice laptev Laptev Sea lena delta lena river permafrost The Cryosphere Thermokarst Siberia |
op_source |
The Cryosphere, Vol 14, Pp 4525-4551 (2020) |
op_relation |
https://tc.copernicus.org/articles/14/4525/2020/tc-14-4525-2020.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-14-4525-2020 1994-0416 1994-0424 https://doaj.org/article/bb2a755dc2754e1e9b5efa390eafe3ab |
op_doi |
https://doi.org/10.5194/tc-14-4525-2020 |
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The Cryosphere |
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14 |
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12 |
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4525 |
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4551 |
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1766349364513472512 |