Thermokarst Processes and Depositional Events in a Tundra Lake, Northeastern Siberia
ABSTRACT The relationships between thermokarst activity, limnogeological processes and climate change in the Siberian Arctic are not well understood. The objective of this paper is to identify the factors controlling the patterns of deposition, using grain size distribution, organic content, element...
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crwiley:10.1002/ppp.1769 2024-06-02T08:02:14+00:00 Thermokarst Processes and Depositional Events in a Tundra Lake, Northeastern Siberia Biskaborn, Boris K. Herzschuh, Ulrike Bolshiyanov, Dmitry Y. Schwamborn, Georg Diekmann, Bernhard 2013 http://dx.doi.org/10.1002/ppp.1769 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1769 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1769 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 24, issue 3, page 160-174 ISSN 1045-6740 1099-1530 journal-article 2013 crwiley https://doi.org/10.1002/ppp.1769 2024-05-03T11:39:37Z ABSTRACT The relationships between thermokarst activity, limnogeological processes and climate change in the Siberian Arctic are not well understood. The objective of this paper is to identify the factors controlling the patterns of deposition, using grain size distribution, organic content, elemental composition and mineralogical composition of a 137‐cm long sediment core with a maximum age of ~ 10.9 cal. kyr BP from Lake El'gene‐Kyuele in the tundra of northeastern Siberia. Eight fine sand layers are attributed to depositional events associated with thaw slump activity acting upon orthogonally oriented patterns of ice‐wedge networks in the ice‐rich permafrost on the NW margin of the lake catchment. Sr/Rb ratios, which correspond to the total feldspar and illite content, serve as high‐resolution grain size proxies. The Br content relates to the total organic carbon content, and the Fe/Mn ratio reflects the degree of oxidisation. Our results indicate a relationship between repeated phases of fine sand input and retrogressive thaw slumping dependent on hydroclimate variability and orthogonally oriented ice‐wedge networks within the catchment. Copyright © 2013 John Wiley & Sons, Ltd. Article in Journal/Newspaper Arctic Climate change Ice permafrost Permafrost and Periglacial Processes Thermokarst Tundra wedge* Siberia Wiley Online Library Arctic Permafrost and Periglacial Processes 24 3 160 174 |
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Open Polar |
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Wiley Online Library |
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crwiley |
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English |
description |
ABSTRACT The relationships between thermokarst activity, limnogeological processes and climate change in the Siberian Arctic are not well understood. The objective of this paper is to identify the factors controlling the patterns of deposition, using grain size distribution, organic content, elemental composition and mineralogical composition of a 137‐cm long sediment core with a maximum age of ~ 10.9 cal. kyr BP from Lake El'gene‐Kyuele in the tundra of northeastern Siberia. Eight fine sand layers are attributed to depositional events associated with thaw slump activity acting upon orthogonally oriented patterns of ice‐wedge networks in the ice‐rich permafrost on the NW margin of the lake catchment. Sr/Rb ratios, which correspond to the total feldspar and illite content, serve as high‐resolution grain size proxies. The Br content relates to the total organic carbon content, and the Fe/Mn ratio reflects the degree of oxidisation. Our results indicate a relationship between repeated phases of fine sand input and retrogressive thaw slumping dependent on hydroclimate variability and orthogonally oriented ice‐wedge networks within the catchment. Copyright © 2013 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Biskaborn, Boris K. Herzschuh, Ulrike Bolshiyanov, Dmitry Y. Schwamborn, Georg Diekmann, Bernhard |
spellingShingle |
Biskaborn, Boris K. Herzschuh, Ulrike Bolshiyanov, Dmitry Y. Schwamborn, Georg Diekmann, Bernhard Thermokarst Processes and Depositional Events in a Tundra Lake, Northeastern Siberia |
author_facet |
Biskaborn, Boris K. Herzschuh, Ulrike Bolshiyanov, Dmitry Y. Schwamborn, Georg Diekmann, Bernhard |
author_sort |
Biskaborn, Boris K. |
title |
Thermokarst Processes and Depositional Events in a Tundra Lake, Northeastern Siberia |
title_short |
Thermokarst Processes and Depositional Events in a Tundra Lake, Northeastern Siberia |
title_full |
Thermokarst Processes and Depositional Events in a Tundra Lake, Northeastern Siberia |
title_fullStr |
Thermokarst Processes and Depositional Events in a Tundra Lake, Northeastern Siberia |
title_full_unstemmed |
Thermokarst Processes and Depositional Events in a Tundra Lake, Northeastern Siberia |
title_sort |
thermokarst processes and depositional events in a tundra lake, northeastern siberia |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1002/ppp.1769 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1769 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1769 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Ice permafrost Permafrost and Periglacial Processes Thermokarst Tundra wedge* Siberia |
genre_facet |
Arctic Climate change Ice permafrost Permafrost and Periglacial Processes Thermokarst Tundra wedge* Siberia |
op_source |
Permafrost and Periglacial Processes volume 24, issue 3, page 160-174 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.1769 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
24 |
container_issue |
3 |
container_start_page |
160 |
op_container_end_page |
174 |
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1800746739335954432 |