| DOI: | 10.1016/j.gloplacha.2014.02.002
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| 论文题名: | The response of the Okhotsk Sea environment to the orbital-millennium global climate changes during the Last Glacial Maximum, deglaciation and Holocene |
| 作者: | Gorbarenko S.A.; Artemova A.V.; Goldberg E.L.; Vasilenko Y.P.
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| ISSN: | 0921-8442
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| 出版年: | 2014
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| 卷: | 116 | | 起始页码: | 76
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| 结束页码: | 90
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| 语种: | 英语
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| 英文关键词: | Climate and environmental changes
; Diatoms
; LGM-deglaciation-holocene
; Okhotsk sea
; Productivity
; Sea ice
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| Scopus关键词: | Diatoms
; Environmental change
; Environmental conditions
; Global climate changes
; LGM-deglaciation-holocene
; North pacific deep waters
; Okhotsk sea
; Summer monsoon precipitation
; Barium
; C (programming language)
; Caves
; Climate change
; Isotopes
; Organic carbon
; Productivity
; Sea ice
; Sediments
; Surface waters
; Glacial geology
; climate change
; deep water
; deglaciation
; diatom
; environmental conditions
; geoaccumulation
; global climate
; Holocene
; Last Glacial Maximum
; numerical model
; oxygen isotope
; pollen
; resolution
; sea ice
; surface water
; tephrochronology
; Amur River
; Pacific Ocean
; Sea of Okhotsk
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| 英文摘要: | Reconstruction of regional climate and the Okhotsk Sea (OS) environment for the Last Glacial Maximum (LGM), deglaciation and Holocene was performed on the basis of high-resolution records of ice rafted debris (IRD), s{cyrillic}a{cyrillic}s{cyrillic}O{cyrillic}3, opal, total organic carbon (TOs{cyrillic}), biogenic Ba (Ba_bio) and redox sensitive element (Mn, Mo) content, and diatom and pollen results of four cores that form a north-southern transect. Age models of the studied cores were earlier established by AMS 14C data, oxygen-isotope chronostratigraphy and tephrochronology. According to received results, since 25ka the regional climate and OS environmental conditions have changed synchronously with LGM condition, cold Heinrich event 1, Bølling-Allerød (BA) warming, Younger Dryas (YD) cooling and Pre-Boreal (PB) warming recorded in the Greenland ice core, North Atlantic sediment, and China cave stalagmites. Calculation of IRD MAR in sediment of north-south transect cores indicates an increase of sea ice formation several times in the glacial OS as compared to the Late Holocene. Accompanying ice formation, increased brine rejection and the larger potential density of surface water at the north shelf due to a drop of glacial East Asia summer monsoon precipitation and Amur River run off, led to strong enhancement of the role of the OS in glacial North Pacific Intermediate Water (NPIW) formation. The remarkable increase in OS productivity during BA and PB warming was probably related with significant reorganisation of the North Pacific deep water ventilation and nutrient input into the NPIW and OS Intermediate Water (OSIW). Seven Holocene OS millennial cold events based on the elevated values of the detrended IRD stack record over the IRD broad trend in the sediments of the studied cores have occurred synchronously with cold events recorded in the North Atlantic, Greenland ice cores and China cave stalagmites after 9ka. Diatom production in the OS was mostly controlled by sea ice cover changes and surface water stratification induced by sea-ice melting; therefore significant opal accumulation in sediments of this basin begin from 4 to 6ka ago simultaneously with a remarkable decrease of sea ice cover. © 2014 Elsevier B.V. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896821191&doi=10.1016%2fj.gloplacha.2014.02.002&partnerID=40&md5=abde8d06e6895372d934d2122aaf181e
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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/11348
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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: | V.I. Il'ichev Pacific Oceanological Institute, FEB RAS, 690041 Vladivostok, Baltiyskaya str. 43, Russian Federation
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| Recommended Citation: | |
Gorbarenko S.A.,Artemova A.V.,Goldberg E.L.,et al. The response of the Okhotsk Sea environment to the orbital-millennium global climate changes during the Last Glacial Maximum, deglaciation and Holocene[J],2014-01-01,116.
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