Winter air temperature in the early and middle Holocene on the eastern coast of Daurkin Peninsula, Chukotka, reconstructed from stable isotopes of ice wedges
The object of research is the Holocene massive ice veins on the Eastern coast of the Daurkin Peninsula, the easternmost part of the Chukotka. Peat bogs with ice veins occur on the surface of marine terraces (near Uelen and Lorino settlements) and on flood plain of the Koolen’ Lake; the thickness of...
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Nauka
2020
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Online Access: | https://doi.org/10.31857/S2076673420020038 https://doaj.org/article/f1bfb1bacc5049e8a934daa2060ef2da |
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ftdoajarticles:oai:doaj.org/article:f1bfb1bacc5049e8a934daa2060ef2da 2023-05-15T15:54:51+02:00 Winter air temperature in the early and middle Holocene on the eastern coast of Daurkin Peninsula, Chukotka, reconstructed from stable isotopes of ice wedges N. A. Budantseva A. A. Maslakov Yu. K. Vasil'chuk A. V. Baranskaya N. V. Belova A. C. Vasil'chuk F. A. Romanenko 2020-05-01T00:00:00Z https://doi.org/10.31857/S2076673420020038 https://doaj.org/article/f1bfb1bacc5049e8a934daa2060ef2da RU rus Nauka https://ice-snow.igras.ru/jour/article/view/804 https://doaj.org/toc/2076-6734 https://doaj.org/toc/2412-3765 2076-6734 2412-3765 doi:10.31857/S2076673420020038 https://doaj.org/article/f1bfb1bacc5049e8a934daa2060ef2da Лëд и снег, Vol 60, Iss 2, Pp 251-262 (2020) голоцен дейтериевый эксцесс зимняя температура воздуха изотопы водорода изотопы кислорода палеотемпературные реконструкции повторно-жильный лёд радиоуглеродный возраст торфяник чукотка Science Q article 2020 ftdoajarticles https://doi.org/10.31857/S2076673420020038 2023-03-19T01:40:11Z The object of research is the Holocene massive ice veins on the Eastern coast of the Daurkin Peninsula, the easternmost part of the Chukotka. Peat bogs with ice veins occur on the surface of marine terraces (near Uelen and Lorino settlements) and on flood plain of the Koolen’ Lake; the thickness of peat varies from 0.7 to 2.5 m. Radiocarbon dating of the peat enclosing the investigated ice veins near Uelen and Lorino indicated that the beginning of peat accumulation began at the end of Late Pleistocene – early Holocene, about 11 cal ka BP. On the flood plain of the Koolen’ Lake peat bogs began to accumulate in the middle Holocene, i.e. around 6 cal ka BP. At the initial stage of peat bogs formation the rate of peat accumulation was high and could reach 1 cm/10 years. Ice veins occur at a depth of 0.5–1 m, and their lower parts are located in the underlying peat sandy loams and loams. In the upper levels of the peat bogs, narrow present-day ice veins are found, which are sometimes embedded in the upper parts of Holocene veins. A clear sign of syngenetic growth of veins is the upward bending of the layers of the host peat at the lateral contacts with the veins. The main source of water for the formation of ice veins is snow, as evidenced by the ratio of stable isotopes of oxygen and hydrogen and the values of deuterium excesses in the ice. A slight admixture of saline water (probably from a seasonally thawed layer) was noted in the veins near the Lorino settlement. Reconstructions of winter air paleotemperatures, performed on the basis of data of isotope-oxygen composition of ice from the veins, did show that at the period between 11 and 6 cal Ka BP, the mean winter air temperature on the Daurkin Peninsula was by 2–5 oC lower than today, but the air temperature of the coldest month (January or February) was still lower (by 4-8 oC) than today. The noticeable trend of increase of stable isotope values in the ice veins from early Holocene to the present time is indicative of a steady positive trend of mean winter air ... Article in Journal/Newspaper Chukotka ЧУКОТКА Directory of Open Access Journals: DOAJ Articles Lorino ENVELOPE(-171.704,-171.704,65.503,65.503) Uelen ENVELOPE(-169.810,-169.810,66.160,66.160) Ice and Snow 60 2 251 262 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
голоцен дейтериевый эксцесс зимняя температура воздуха изотопы водорода изотопы кислорода палеотемпературные реконструкции повторно-жильный лёд радиоуглеродный возраст торфяник чукотка Science Q |
spellingShingle |
голоцен дейтериевый эксцесс зимняя температура воздуха изотопы водорода изотопы кислорода палеотемпературные реконструкции повторно-жильный лёд радиоуглеродный возраст торфяник чукотка Science Q N. A. Budantseva A. A. Maslakov Yu. K. Vasil'chuk A. V. Baranskaya N. V. Belova A. C. Vasil'chuk F. A. Romanenko Winter air temperature in the early and middle Holocene on the eastern coast of Daurkin Peninsula, Chukotka, reconstructed from stable isotopes of ice wedges |
topic_facet |
голоцен дейтериевый эксцесс зимняя температура воздуха изотопы водорода изотопы кислорода палеотемпературные реконструкции повторно-жильный лёд радиоуглеродный возраст торфяник чукотка Science Q |
description |
The object of research is the Holocene massive ice veins on the Eastern coast of the Daurkin Peninsula, the easternmost part of the Chukotka. Peat bogs with ice veins occur on the surface of marine terraces (near Uelen and Lorino settlements) and on flood plain of the Koolen’ Lake; the thickness of peat varies from 0.7 to 2.5 m. Radiocarbon dating of the peat enclosing the investigated ice veins near Uelen and Lorino indicated that the beginning of peat accumulation began at the end of Late Pleistocene – early Holocene, about 11 cal ka BP. On the flood plain of the Koolen’ Lake peat bogs began to accumulate in the middle Holocene, i.e. around 6 cal ka BP. At the initial stage of peat bogs formation the rate of peat accumulation was high and could reach 1 cm/10 years. Ice veins occur at a depth of 0.5–1 m, and their lower parts are located in the underlying peat sandy loams and loams. In the upper levels of the peat bogs, narrow present-day ice veins are found, which are sometimes embedded in the upper parts of Holocene veins. A clear sign of syngenetic growth of veins is the upward bending of the layers of the host peat at the lateral contacts with the veins. The main source of water for the formation of ice veins is snow, as evidenced by the ratio of stable isotopes of oxygen and hydrogen and the values of deuterium excesses in the ice. A slight admixture of saline water (probably from a seasonally thawed layer) was noted in the veins near the Lorino settlement. Reconstructions of winter air paleotemperatures, performed on the basis of data of isotope-oxygen composition of ice from the veins, did show that at the period between 11 and 6 cal Ka BP, the mean winter air temperature on the Daurkin Peninsula was by 2–5 oC lower than today, but the air temperature of the coldest month (January or February) was still lower (by 4-8 oC) than today. The noticeable trend of increase of stable isotope values in the ice veins from early Holocene to the present time is indicative of a steady positive trend of mean winter air ... |
format |
Article in Journal/Newspaper |
author |
N. A. Budantseva A. A. Maslakov Yu. K. Vasil'chuk A. V. Baranskaya N. V. Belova A. C. Vasil'chuk F. A. Romanenko |
author_facet |
N. A. Budantseva A. A. Maslakov Yu. K. Vasil'chuk A. V. Baranskaya N. V. Belova A. C. Vasil'chuk F. A. Romanenko |
author_sort |
N. A. Budantseva |
title |
Winter air temperature in the early and middle Holocene on the eastern coast of Daurkin Peninsula, Chukotka, reconstructed from stable isotopes of ice wedges |
title_short |
Winter air temperature in the early and middle Holocene on the eastern coast of Daurkin Peninsula, Chukotka, reconstructed from stable isotopes of ice wedges |
title_full |
Winter air temperature in the early and middle Holocene on the eastern coast of Daurkin Peninsula, Chukotka, reconstructed from stable isotopes of ice wedges |
title_fullStr |
Winter air temperature in the early and middle Holocene on the eastern coast of Daurkin Peninsula, Chukotka, reconstructed from stable isotopes of ice wedges |
title_full_unstemmed |
Winter air temperature in the early and middle Holocene on the eastern coast of Daurkin Peninsula, Chukotka, reconstructed from stable isotopes of ice wedges |
title_sort |
winter air temperature in the early and middle holocene on the eastern coast of daurkin peninsula, chukotka, reconstructed from stable isotopes of ice wedges |
publisher |
Nauka |
publishDate |
2020 |
url |
https://doi.org/10.31857/S2076673420020038 https://doaj.org/article/f1bfb1bacc5049e8a934daa2060ef2da |
long_lat |
ENVELOPE(-171.704,-171.704,65.503,65.503) ENVELOPE(-169.810,-169.810,66.160,66.160) |
geographic |
Lorino Uelen |
geographic_facet |
Lorino Uelen |
genre |
Chukotka ЧУКОТКА |
genre_facet |
Chukotka ЧУКОТКА |
op_source |
Лëд и снег, Vol 60, Iss 2, Pp 251-262 (2020) |
op_relation |
https://ice-snow.igras.ru/jour/article/view/804 https://doaj.org/toc/2076-6734 https://doaj.org/toc/2412-3765 2076-6734 2412-3765 doi:10.31857/S2076673420020038 https://doaj.org/article/f1bfb1bacc5049e8a934daa2060ef2da |
op_doi |
https://doi.org/10.31857/S2076673420020038 |
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Ice and Snow |
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60 |
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251 |
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262 |
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