Holocene environment of Central Kamchatka, Russia: Implications from a multi-proxy record of Two-Yurts Lake
© 2015 Elsevier B.V. Within the scope of Russian-German palaeoenvironmental research, Two-Yurts Lake (TYL, Dvuh-Yurtochnoe in Russian) was chosen as the main scientific target area to decipher Holocene climate variability on Kamchatka. The 5. ×. 2 km large and 26 m deep lake is of proglacial origin...
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ftneicon:oai:rour.neicon.ru:rour/176482 2023-05-15T16:58:33+02:00 Holocene environment of Central Kamchatka, Russia: Implications from a multi-proxy record of Two-Yurts Lake Hoff U. Biskaborn B. Dirksen V. Dirksen O. Kuhn G. Meyer H. Nazarova L. Roth A. Diekmann B. 2014 https://openrepository.ru/article?id=176482 unknown Global and Planetary Change 134 101 http://rour.neicon.ru:80/xmlui/bitstream/rour/176482/1/nora.pdf 0921-8181 https://openrepository.ru/article?id=176482 SCOPUS09218181-2014-134-SID84947047552 Diatoms Holocene Climate Kamchatka North Pacific Palaeolimnology Pollen Article 2014 ftneicon 2020-07-21T11:59:52Z © 2015 Elsevier B.V. Within the scope of Russian-German palaeoenvironmental research, Two-Yurts Lake (TYL, Dvuh-Yurtochnoe in Russian) was chosen as the main scientific target area to decipher Holocene climate variability on Kamchatka. The 5. ×. 2 km large and 26 m deep lake is of proglacial origin and situated on the eastern flank of Sredinny Ridge at the northwestern end of the Central Kamchatka Valley, outside the direct influence of active volcanism. Here, we present results of a multi-proxy study on sediment cores, spanning about the last 7000 years. The general tenor of the TYL record is an increase in continentality and winter snow cover in conjunction with a decrease in temperature, humidity, and biological productivity after 5000-4500. cal. yrs. BP, inferred from pollen and diatom data and the isotopic composition of organic carbon. The TYL proxy data also show that the late Holocene was punctuated by two colder spells, roughly between 4500 and 3500 cal. yrs. BP and between 1000 and 200 cal. yrs. BP, as local expressions of the Neoglacial and Little Ice Age, respectively. These environmental changes can be regarded as direct and indirect responses to climate change, as also demonstrated by other records in the regional terrestrial and marine realm. Long-term climate deterioration was driven by decreasing insolation, while the short-term climate excursions are best explained by local climatic processes. The latter affect the configuration of atmospheric pressure systems that control the sources as well as the temperature and moisture of air masses reaching Kamchatka. Article in Journal/Newspaper Kamchatka NORA (National aggregator of open repositories of Russian universities) Pacific |
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Open Polar |
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NORA (National aggregator of open repositories of Russian universities) |
op_collection_id |
ftneicon |
language |
unknown |
topic |
Diatoms Holocene Climate Kamchatka North Pacific Palaeolimnology Pollen |
spellingShingle |
Diatoms Holocene Climate Kamchatka North Pacific Palaeolimnology Pollen Hoff U. Biskaborn B. Dirksen V. Dirksen O. Kuhn G. Meyer H. Nazarova L. Roth A. Diekmann B. Holocene environment of Central Kamchatka, Russia: Implications from a multi-proxy record of Two-Yurts Lake |
topic_facet |
Diatoms Holocene Climate Kamchatka North Pacific Palaeolimnology Pollen |
description |
© 2015 Elsevier B.V. Within the scope of Russian-German palaeoenvironmental research, Two-Yurts Lake (TYL, Dvuh-Yurtochnoe in Russian) was chosen as the main scientific target area to decipher Holocene climate variability on Kamchatka. The 5. ×. 2 km large and 26 m deep lake is of proglacial origin and situated on the eastern flank of Sredinny Ridge at the northwestern end of the Central Kamchatka Valley, outside the direct influence of active volcanism. Here, we present results of a multi-proxy study on sediment cores, spanning about the last 7000 years. The general tenor of the TYL record is an increase in continentality and winter snow cover in conjunction with a decrease in temperature, humidity, and biological productivity after 5000-4500. cal. yrs. BP, inferred from pollen and diatom data and the isotopic composition of organic carbon. The TYL proxy data also show that the late Holocene was punctuated by two colder spells, roughly between 4500 and 3500 cal. yrs. BP and between 1000 and 200 cal. yrs. BP, as local expressions of the Neoglacial and Little Ice Age, respectively. These environmental changes can be regarded as direct and indirect responses to climate change, as also demonstrated by other records in the regional terrestrial and marine realm. Long-term climate deterioration was driven by decreasing insolation, while the short-term climate excursions are best explained by local climatic processes. The latter affect the configuration of atmospheric pressure systems that control the sources as well as the temperature and moisture of air masses reaching Kamchatka. |
format |
Article in Journal/Newspaper |
author |
Hoff U. Biskaborn B. Dirksen V. Dirksen O. Kuhn G. Meyer H. Nazarova L. Roth A. Diekmann B. |
author_facet |
Hoff U. Biskaborn B. Dirksen V. Dirksen O. Kuhn G. Meyer H. Nazarova L. Roth A. Diekmann B. |
author_sort |
Hoff U. |
title |
Holocene environment of Central Kamchatka, Russia: Implications from a multi-proxy record of Two-Yurts Lake |
title_short |
Holocene environment of Central Kamchatka, Russia: Implications from a multi-proxy record of Two-Yurts Lake |
title_full |
Holocene environment of Central Kamchatka, Russia: Implications from a multi-proxy record of Two-Yurts Lake |
title_fullStr |
Holocene environment of Central Kamchatka, Russia: Implications from a multi-proxy record of Two-Yurts Lake |
title_full_unstemmed |
Holocene environment of Central Kamchatka, Russia: Implications from a multi-proxy record of Two-Yurts Lake |
title_sort |
holocene environment of central kamchatka, russia: implications from a multi-proxy record of two-yurts lake |
publishDate |
2014 |
url |
https://openrepository.ru/article?id=176482 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_source |
SCOPUS09218181-2014-134-SID84947047552 |
op_relation |
Global and Planetary Change 134 101 http://rour.neicon.ru:80/xmlui/bitstream/rour/176482/1/nora.pdf 0921-8181 https://openrepository.ru/article?id=176482 |
_version_ |
1766050600389181440 |