| DOI: | 10.1016/j.gloplacha.2015.07.011
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| 论文题名: | Holocene environment of Central Kamchatka, Russia: Implications from a multi-proxy record of Two-Yurts Lake |
| 作者: | Hoff U.; Biskaborn B.K.; Dirksen V.G.; Dirksen O.; Kuhn G.; Meyer H.; Nazarova L.; Roth A.; Diekmann B.
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| ISSN: | 0921-8416
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| 出版年: | 2014
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| 卷: | 134 | | 起始页码: | 101
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| 结束页码: | 117
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| 语种: | 英语
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| 英文关键词: | Diatoms
; Holocene Climate
; Kamchatka
; North Pacific
; Palaeolimnology
; Pollen
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| Scopus关键词: | Atmospheric humidity
; Atmospheric pressure
; Carbon
; Lakes
; Organic carbon
; Snow
; Diatoms
; Holocene climate
; Kamchatka
; North Pacific
; Palaeolimnology
; Pollen
; Climate change
; biological production
; climate variation
; diatom
; humidity
; Little Ice Age
; Neoglacial
; paleoenvironment
; paleolimnology
; pollen
; proglacial environment
; temperature effect
; volcanism
; Kamchatka
; Pacific Ocean
; Pacific Ocean (North)
; Russian Federation
; Sredinnyi Ridge
; Bacillariophyta
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| 英文摘要: | 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. © 2015 Elsevier B.V. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84947047552&doi=10.1016%2fj.gloplacha.2015.07.011&partnerID=40&md5=1356deb88af8800e4ae056689fa1a92c
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/11322
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| Appears in Collections: | 全球变化的国际研究计划
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作者单位: | Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Telegrafenberg A43, Potsdam, Germany
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| Recommended Citation: | |
Hoff U.,Biskaborn B.K.,Dirksen V.G.,et al. Holocene environment of Central Kamchatka, Russia: Implications from a multi-proxy record of Two-Yurts Lake[J],2014-01-01,134.
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