Isotopic evidence for Holocene January air temperature variability on the East Chukotka Peninsula
Ice‐wedge ice can provide a valuable record of past winter climate variability at high latitudes yet to date this proxy has been applied only sparsely across the Chukotka region of Siberia. Here we present data from eight ice‐wedges at four sites across a 600‐km transect in Eastern Chukotka which we...
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Online Access: | https://doi.org/10.1002/ppp.1991 |
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ftrepec:oai:RePEc:wly:perpro:v:29:y:2018:i:4:p:283-297 2023-05-15T15:54:44+02:00 Isotopic evidence for Holocene January air temperature variability on the East Chukotka Peninsula Yurij K. Vasil'chuk Nadine A. Budantseva Louise M. Farquharson Alexey A. Maslakov Alla C. Vasil'chuk Julia N. Chizhova https://doi.org/10.1002/ppp.1991 unknown https://doi.org/10.1002/ppp.1991 article ftrepec https://doi.org/10.1002/ppp.1991 2020-12-04T13:31:25Z Ice‐wedge ice can provide a valuable record of past winter climate variability at high latitudes yet to date this proxy has been applied only sparsely across the Chukotka region of Siberia. Here we present data from eight ice‐wedges at four sites across a 600‐km transect in Eastern Chukotka which we use to reconstruct regional Holocene winter paleotemperature. The Holocene age of ice‐wedges was established by radiocarbon dating of peat surrounding individual ice‐wedges. Our suite of radiocarbon ages suggests that the studied ice‐wedges formed between 12.9–11.8 and 3–2.5 cal ka BP. δ18O and δ2H values from ice‐wedge ice indicate that in coastal areas of Eastern Chukotka mean January air temperatures in the first half of the Holocene were on average 2–3°С lower than modern values, a finding that corresponds well with winter climate reconstructions for the other areas of Beringia. The variability of reconstructed mean January air temperatures in the study area did not exceed 2–4°C during the early to mid‐Holocene. Article in Journal/Newspaper Chukotka Chukotka Peninsula Beringia Siberia RePEc (Research Papers in Economics) Permafrost and Periglacial Processes 29 4 283 297 |
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Open Polar |
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RePEc (Research Papers in Economics) |
op_collection_id |
ftrepec |
language |
unknown |
description |
Ice‐wedge ice can provide a valuable record of past winter climate variability at high latitudes yet to date this proxy has been applied only sparsely across the Chukotka region of Siberia. Here we present data from eight ice‐wedges at four sites across a 600‐km transect in Eastern Chukotka which we use to reconstruct regional Holocene winter paleotemperature. The Holocene age of ice‐wedges was established by radiocarbon dating of peat surrounding individual ice‐wedges. Our suite of radiocarbon ages suggests that the studied ice‐wedges formed between 12.9–11.8 and 3–2.5 cal ka BP. δ18O and δ2H values from ice‐wedge ice indicate that in coastal areas of Eastern Chukotka mean January air temperatures in the first half of the Holocene were on average 2–3°С lower than modern values, a finding that corresponds well with winter climate reconstructions for the other areas of Beringia. The variability of reconstructed mean January air temperatures in the study area did not exceed 2–4°C during the early to mid‐Holocene. |
format |
Article in Journal/Newspaper |
author |
Yurij K. Vasil'chuk Nadine A. Budantseva Louise M. Farquharson Alexey A. Maslakov Alla C. Vasil'chuk Julia N. Chizhova |
spellingShingle |
Yurij K. Vasil'chuk Nadine A. Budantseva Louise M. Farquharson Alexey A. Maslakov Alla C. Vasil'chuk Julia N. Chizhova Isotopic evidence for Holocene January air temperature variability on the East Chukotka Peninsula |
author_facet |
Yurij K. Vasil'chuk Nadine A. Budantseva Louise M. Farquharson Alexey A. Maslakov Alla C. Vasil'chuk Julia N. Chizhova |
author_sort |
Yurij K. Vasil'chuk |
title |
Isotopic evidence for Holocene January air temperature variability on the East Chukotka Peninsula |
title_short |
Isotopic evidence for Holocene January air temperature variability on the East Chukotka Peninsula |
title_full |
Isotopic evidence for Holocene January air temperature variability on the East Chukotka Peninsula |
title_fullStr |
Isotopic evidence for Holocene January air temperature variability on the East Chukotka Peninsula |
title_full_unstemmed |
Isotopic evidence for Holocene January air temperature variability on the East Chukotka Peninsula |
title_sort |
isotopic evidence for holocene january air temperature variability on the east chukotka peninsula |
url |
https://doi.org/10.1002/ppp.1991 |
genre |
Chukotka Chukotka Peninsula Beringia Siberia |
genre_facet |
Chukotka Chukotka Peninsula Beringia Siberia |
op_relation |
https://doi.org/10.1002/ppp.1991 |
op_doi |
https://doi.org/10.1002/ppp.1991 |
container_title |
Permafrost and Periglacial Processes |
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29 |
container_issue |
4 |
container_start_page |
283 |
op_container_end_page |
297 |
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1766389959518846976 |