气候变化领域集成服务门户(CCPortal): Orbital and millennial-scale environmental and hydrological changes of the central Okhotsk Sea over the last 136 kyr inferred from micropaleontological (radiolarian and benthic foraminifera); geochemical and lithological proxies and the mechanisms responsible for them

CCPortal

DOI	10.1016/j.quascirev.2020.106569
	Orbital and millennial-scale environmental and hydrological changes of the central Okhotsk Sea over the last 136 kyr inferred from micropaleontological (radiolarian and benthic foraminifera); geochemical and lithological proxies and the mechanisms responsible for them
	Gorbarenko S.A.; Yanchenko E.A.; Psheneva O.Y.; Harada N.; Bosin A.A.; Artemova A.V.; Vasilenko Y.P.
发表日期	2020
ISSN	0277-3791
卷号	247
英文摘要	The response of benthic foraminifera (BF) and radiolarian production in the central Okhotsk Sea (OS) to orbital and millennial changes of climate and environment over the last 136 kyr have been studied on the basis of the sediment core PC-7R, with available productivity, geochemical and lithological records and a modified age model. We used the calculated accumulation rate of microfossils (AR, fluxes) of the main ecological groups and species indicative of radiolarians and of BF as quantity responses in their production, which is related to environmental and hydrological changes of the water column and surface sediment in the central OS and to global and regional climate changes. The responses of the opportunistic BF Alabaminella weddellensis and the suboxic group during the last 136 kyr were mostly related to changes in organic fluxes from the surface, sea ice cover and surface sediment oxygenation at both orbital and millennial time scales. The AR of radiolarians from the surface, dichothermal and mesopelagic groups significantly differed from the AR of BF. The AR has a maximum during the middle and late Marine Isotope Stage 5e and lower values during the earlier Holocene, while the minimum happened during cold Marine Isotope Stages 6, 4 and 2 with maximal ventilation of OS intermediate water. Production of the mesopelagic radiolarian Cycladophora davisiana in the OS was mostly related to the lateral delivery of terrigenous material and OM into the water column from the northwestern shelf and/or from the western subarctic Pacific. Due to the sensitivity of marine organisms to environmental conditions, the production of radiolarians and BF sharply changed with the extinction of Amphimelissa setosa, since Heinrich Stadial 8 is related to the termination of global environment cooling and the hydrology changes of the early last glacial. © 2020 Elsevier Ltd
英文关键词	Climate; Dichothermal water; Glacials; Interglacials; Mesopelagic water; Microfossils; Paleoceanography; Productivity; Sea ice; Surface water
语种	英语
scopus关键词	Climate models; Geochemistry; Glacial geology; Isotopes; Lithology; Marine biology; Sea ice; Surficial sediments; Accumulation rates; Benthic foraminifera; Environmental conditions; Hydrological changes; Intermediate waters; Marine isotope stages; Regional climate changes; Water column and surface sediments; Climate change; benthic foraminifera; biostratigraphy; cooling water; geochemical survey; Heinrich event; hydrological regime; lithology; micropaleontology; paleoceanography; radiolaria; sea ice; sediment core; water column; Pacific Ocean; Sea of Okhotsk; Cycladophora davisiana; Foraminifera; Radiolaria (protozoans)
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151305
作者单位	V.I. Il'ichev Pacific Oceanological Institute, Far Eastern Branch of the Russian Academy of Science, Vladivostok, Russian Federation; Japan Agency for Marine-Earth Science and Technology, Yokosuka, 237-0061, Japan
推荐引用方式 GB/T 7714	Gorbarenko S.A.,Yanchenko E.A.,Psheneva O.Y.,et al. Orbital and millennial-scale environmental and hydrological changes of the central Okhotsk Sea over the last 136 kyr inferred from micropaleontological (radiolarian and benthic foraminifera); geochemical and lithological proxies and the mechanisms responsible for them[J],2020,247.
APA	Gorbarenko S.A..,Yanchenko E.A..,Psheneva O.Y..,Harada N..,Bosin A.A..,...&Vasilenko Y.P..(2020).Orbital and millennial-scale environmental and hydrological changes of the central Okhotsk Sea over the last 136 kyr inferred from micropaleontological (radiolarian and benthic foraminifera); geochemical and lithological proxies and the mechanisms responsible for them.Quaternary Science Reviews,247.
MLA	Gorbarenko S.A.,et al."Orbital and millennial-scale environmental and hydrological changes of the central Okhotsk Sea over the last 136 kyr inferred from micropaleontological (radiolarian and benthic foraminifera); geochemical and lithological proxies and the mechanisms responsible for them".Quaternary Science Reviews 247(2020).