Holocene January paleotemperature of northwestern Siberia reconstructed based on stable isotope ratio of ice wedges
Abstract Ice wedges are considered as a paleoarchive of winter air temperatures as their stable isotope composition has been widely used to reconstruct winter climatic conditions in the Arctic regions. Ice wedge stable isotope records, obtained in recent decades for many Arctic permafrost areas of R...
Published in: | Permafrost and Periglacial Processes |
---|---|
Main Authors: | , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2022
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/ppp.2177 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2177 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2177 |
id |
crwiley:10.1002/ppp.2177 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/ppp.2177 2024-09-15T18:11:36+00:00 Holocene January paleotemperature of northwestern Siberia reconstructed based on stable isotope ratio of ice wedges Vasil'chuk, Yurij K. Vasil'chuk, Alla C. Budantseva, Nadine A. Russian Foundation for Basic Research 2022 http://dx.doi.org/10.1002/ppp.2177 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2177 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2177 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 34, issue 1, page 142-165 ISSN 1045-6740 1099-1530 journal-article 2022 crwiley https://doi.org/10.1002/ppp.2177 2024-08-13T04:16:45Z Abstract Ice wedges are considered as a paleoarchive of winter air temperatures as their stable isotope composition has been widely used to reconstruct winter climatic conditions in the Arctic regions. Ice wedge stable isotope records, obtained in recent decades for many Arctic permafrost areas of Russia and North America, demonstrate a clear shift from lower to higher values between the Late Pleistocene and Holocene (by 5–10‰ for δ 18 O values in some regions of the Russian Arctic), which is widely accepted as evidence of winter air temperature increase. However, the evolution of winter air temperatures during the Holocene is less clear and, according to proxy reconstructions, winter climate trends are not synchronous and may significantly vary throughout the Arctic. In this study, we investigate the stable isotope composition of Holocene syngenetic ice wedges and modern ice veinlets of northwestern Siberia. Radiocarbon dating of enclosing sediments and a few dates of organic material from ice wedges demonstrate that ice wedges grew constantly within the study area during the Holocene though early–mid‐Holocene in northwestern Siberia is often considered as a thermal optimum. In fact, many proxy records indicate an increase of summer air temperatures followed by thermokarst activity, peatland formation, and northward advance of the treeline. According to our data, winter climate conditions in terms of mean air temperature of the coldest winter month (January) did not change significantly during the key Holocene stages, and during the Greenlandian and most of the Northgrippian stages (between 11.4 and 6 cal ka BP) mean January air temperature ( T mJ ) varied between −21 and −30°C, and from the end of the Northgrippian, during the Meghalayan stages of Holocene (5.2–0.9 cal ka BP), T mJ varied between −24 to −28°C. Mean January air temperature during the Holocene was generally 1–2°C lower than the modern one, meanwhile the submeridional direction of T mJ isotherms and eastward decrease of T mJ values in Holocene ... Article in Journal/Newspaper Ice permafrost Permafrost and Periglacial Processes Thermokarst wedge* Siberia Wiley Online Library Permafrost and Periglacial Processes 34 1 142 165 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Ice wedges are considered as a paleoarchive of winter air temperatures as their stable isotope composition has been widely used to reconstruct winter climatic conditions in the Arctic regions. Ice wedge stable isotope records, obtained in recent decades for many Arctic permafrost areas of Russia and North America, demonstrate a clear shift from lower to higher values between the Late Pleistocene and Holocene (by 5–10‰ for δ 18 O values in some regions of the Russian Arctic), which is widely accepted as evidence of winter air temperature increase. However, the evolution of winter air temperatures during the Holocene is less clear and, according to proxy reconstructions, winter climate trends are not synchronous and may significantly vary throughout the Arctic. In this study, we investigate the stable isotope composition of Holocene syngenetic ice wedges and modern ice veinlets of northwestern Siberia. Radiocarbon dating of enclosing sediments and a few dates of organic material from ice wedges demonstrate that ice wedges grew constantly within the study area during the Holocene though early–mid‐Holocene in northwestern Siberia is often considered as a thermal optimum. In fact, many proxy records indicate an increase of summer air temperatures followed by thermokarst activity, peatland formation, and northward advance of the treeline. According to our data, winter climate conditions in terms of mean air temperature of the coldest winter month (January) did not change significantly during the key Holocene stages, and during the Greenlandian and most of the Northgrippian stages (between 11.4 and 6 cal ka BP) mean January air temperature ( T mJ ) varied between −21 and −30°C, and from the end of the Northgrippian, during the Meghalayan stages of Holocene (5.2–0.9 cal ka BP), T mJ varied between −24 to −28°C. Mean January air temperature during the Holocene was generally 1–2°C lower than the modern one, meanwhile the submeridional direction of T mJ isotherms and eastward decrease of T mJ values in Holocene ... |
author2 |
Russian Foundation for Basic Research |
format |
Article in Journal/Newspaper |
author |
Vasil'chuk, Yurij K. Vasil'chuk, Alla C. Budantseva, Nadine A. |
spellingShingle |
Vasil'chuk, Yurij K. Vasil'chuk, Alla C. Budantseva, Nadine A. Holocene January paleotemperature of northwestern Siberia reconstructed based on stable isotope ratio of ice wedges |
author_facet |
Vasil'chuk, Yurij K. Vasil'chuk, Alla C. Budantseva, Nadine A. |
author_sort |
Vasil'chuk, Yurij K. |
title |
Holocene January paleotemperature of northwestern Siberia reconstructed based on stable isotope ratio of ice wedges |
title_short |
Holocene January paleotemperature of northwestern Siberia reconstructed based on stable isotope ratio of ice wedges |
title_full |
Holocene January paleotemperature of northwestern Siberia reconstructed based on stable isotope ratio of ice wedges |
title_fullStr |
Holocene January paleotemperature of northwestern Siberia reconstructed based on stable isotope ratio of ice wedges |
title_full_unstemmed |
Holocene January paleotemperature of northwestern Siberia reconstructed based on stable isotope ratio of ice wedges |
title_sort |
holocene january paleotemperature of northwestern siberia reconstructed based on stable isotope ratio of ice wedges |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1002/ppp.2177 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2177 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2177 |
genre |
Ice permafrost Permafrost and Periglacial Processes Thermokarst wedge* Siberia |
genre_facet |
Ice permafrost Permafrost and Periglacial Processes Thermokarst wedge* Siberia |
op_source |
Permafrost and Periglacial Processes volume 34, issue 1, page 142-165 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.2177 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
34 |
container_issue |
1 |
container_start_page |
142 |
op_container_end_page |
165 |
_version_ |
1810449187509108736 |