Holocene evolution of a proglacial lake in southern Kamchatka, Russian Far East
The Kamchatka Peninsula (Russian Far East) remains among the least studied regions of eastern Asia. Recent studies revealed a high degree of palaeoenvironmental variability between different parts of the peninsula. We investigated semi‐aquatic (chironomids) and terrestrial (leaf wax biomarkers) prox...
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crwiley:10.1111/bor.12554 2024-06-02T07:54:44+00:00 Holocene evolution of a proglacial lake in southern Kamchatka, Russian Far East Nazarova, Larisa Sachse, Dirk Fuchs, Harald G. E. Dirksen, Veronika Dirksen, Oleg Syrykh, Liudmila Razjigaeva, Nadezhda G. Rach, Oliver Diekmann, Bernhard Deutsche Forschungsgemeinschaft 2021 http://dx.doi.org/10.1111/bor.12554 https://onlinelibrary.wiley.com/doi/pdf/10.1111/bor.12554 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/bor.12554 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 50, issue 4, page 1011-1026 ISSN 0300-9483 1502-3885 journal-article 2021 crwiley https://doi.org/10.1111/bor.12554 2024-05-03T11:50:09Z The Kamchatka Peninsula (Russian Far East) remains among the least studied regions of eastern Asia. Recent studies revealed a high degree of palaeoenvironmental variability between different parts of the peninsula. We investigated semi‐aquatic (chironomids) and terrestrial (leaf wax biomarkers) proxies from a sediment core collected from Lake Sokoch (southern Kamchatka) to provide reconstruction of the mean July air temperature and variations in limnic conditions. The lake formed after 10.0 cal. ka BP as a result of postglacial warming and was fed by glacial meltwaters from neighbouring glaciers. Our data show a later beginning of the Holocene thermal maximum (HTM) relative to more northern sites in Kamchatka, Siberia and Chukotka and support climate model experiments that suggest that the HTM was delayed in southern and central Kamchatka by about 2000 years compared with Alaska and NE Siberia. Warm conditions prevailed between 10.0 and 6.4 cal. ka BP with a short spell of cool and dry climate around 8.2 cal. ka BP that might be related to the 8.2 ka cooling event. The HTM took place between 6.5 and 3.4 cal. ka BP with the warmest phase from 6.0 to 5.0 cal. ka BP. An onset of Neoglacial cooling at 3.4 cal. ka BP is consistent with the strengthening of both the Siberian High and the Aleutian Low. Warming between 1.2 and 0.9 cal. ka BP can be attributed to the Mediaeval Climate Anomaly. The LIA cooling is related to another strengthening of the Siberian High and the Aleutian Low. The modern warming, though weakly traced in our record, is consistent with the recent meteorological observations. The presented palaeoenvironment record confirms the earlier findings of spatial differences within Kamchatka in timing and magnitude of the major Holocene climate fluctuations and contributes towards understanding the expression of Holocene climate change in Kamchatka. Article in Journal/Newspaper aleutian low Chukotka glaciers Kamchatka Kamchatka Peninsula Alaska Siberia Wiley Online Library Kamchatka Peninsula ENVELOPE(160.000,160.000,56.000,56.000) Sokoch ENVELOPE(157.689,157.689,53.153,53.153) Boreas 50 4 1011 1026 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
The Kamchatka Peninsula (Russian Far East) remains among the least studied regions of eastern Asia. Recent studies revealed a high degree of palaeoenvironmental variability between different parts of the peninsula. We investigated semi‐aquatic (chironomids) and terrestrial (leaf wax biomarkers) proxies from a sediment core collected from Lake Sokoch (southern Kamchatka) to provide reconstruction of the mean July air temperature and variations in limnic conditions. The lake formed after 10.0 cal. ka BP as a result of postglacial warming and was fed by glacial meltwaters from neighbouring glaciers. Our data show a later beginning of the Holocene thermal maximum (HTM) relative to more northern sites in Kamchatka, Siberia and Chukotka and support climate model experiments that suggest that the HTM was delayed in southern and central Kamchatka by about 2000 years compared with Alaska and NE Siberia. Warm conditions prevailed between 10.0 and 6.4 cal. ka BP with a short spell of cool and dry climate around 8.2 cal. ka BP that might be related to the 8.2 ka cooling event. The HTM took place between 6.5 and 3.4 cal. ka BP with the warmest phase from 6.0 to 5.0 cal. ka BP. An onset of Neoglacial cooling at 3.4 cal. ka BP is consistent with the strengthening of both the Siberian High and the Aleutian Low. Warming between 1.2 and 0.9 cal. ka BP can be attributed to the Mediaeval Climate Anomaly. The LIA cooling is related to another strengthening of the Siberian High and the Aleutian Low. The modern warming, though weakly traced in our record, is consistent with the recent meteorological observations. The presented palaeoenvironment record confirms the earlier findings of spatial differences within Kamchatka in timing and magnitude of the major Holocene climate fluctuations and contributes towards understanding the expression of Holocene climate change in Kamchatka. |
author2 |
Deutsche Forschungsgemeinschaft |
format |
Article in Journal/Newspaper |
author |
Nazarova, Larisa Sachse, Dirk Fuchs, Harald G. E. Dirksen, Veronika Dirksen, Oleg Syrykh, Liudmila Razjigaeva, Nadezhda G. Rach, Oliver Diekmann, Bernhard |
spellingShingle |
Nazarova, Larisa Sachse, Dirk Fuchs, Harald G. E. Dirksen, Veronika Dirksen, Oleg Syrykh, Liudmila Razjigaeva, Nadezhda G. Rach, Oliver Diekmann, Bernhard Holocene evolution of a proglacial lake in southern Kamchatka, Russian Far East |
author_facet |
Nazarova, Larisa Sachse, Dirk Fuchs, Harald G. E. Dirksen, Veronika Dirksen, Oleg Syrykh, Liudmila Razjigaeva, Nadezhda G. Rach, Oliver Diekmann, Bernhard |
author_sort |
Nazarova, Larisa |
title |
Holocene evolution of a proglacial lake in southern Kamchatka, Russian Far East |
title_short |
Holocene evolution of a proglacial lake in southern Kamchatka, Russian Far East |
title_full |
Holocene evolution of a proglacial lake in southern Kamchatka, Russian Far East |
title_fullStr |
Holocene evolution of a proglacial lake in southern Kamchatka, Russian Far East |
title_full_unstemmed |
Holocene evolution of a proglacial lake in southern Kamchatka, Russian Far East |
title_sort |
holocene evolution of a proglacial lake in southern kamchatka, russian far east |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/bor.12554 https://onlinelibrary.wiley.com/doi/pdf/10.1111/bor.12554 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/bor.12554 |
long_lat |
ENVELOPE(160.000,160.000,56.000,56.000) ENVELOPE(157.689,157.689,53.153,53.153) |
geographic |
Kamchatka Peninsula Sokoch |
geographic_facet |
Kamchatka Peninsula Sokoch |
genre |
aleutian low Chukotka glaciers Kamchatka Kamchatka Peninsula Alaska Siberia |
genre_facet |
aleutian low Chukotka glaciers Kamchatka Kamchatka Peninsula Alaska Siberia |
op_source |
Boreas volume 50, issue 4, page 1011-1026 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/bor.12554 |
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Boreas |
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50 |
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4 |
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1011 |
op_container_end_page |
1026 |
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1800743282380111872 |