气候变化领域集成服务门户(CCPortal): A new perspective of the Alboran Upwelling System reconstruction during the Marine Isotope Stage 11: A high-resolution coccolithophore record

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DOI	10.1016/j.quascirev.2020.106520
	A new perspective of the Alboran Upwelling System reconstruction during the Marine Isotope Stage 11: A high-resolution coccolithophore record
	González-Lanchas A.; Flores J.-A.; Sierro F.J.; Bárcena M.Á.; Rigual-Hernández A.S.; Oliveira D.; Azibeiro L.A.; Marino M.; Maiorano P.; Cortina A.; Cacho I.; Grimalt J.O.
发表日期	2020
ISSN	0277-3791
卷号	245
英文摘要	A high-resolution study of the MIS 12/MIS 11 transition and the MIS 11 (430–376 kyr) coccolithophore assemblages at Ocean Drilling Program Site 977 was conducted to reconstruct the palaeoceanographic and climatic changes in the Alboran Sea from the variability in surface water conditions. The nannofossil record was integrated with the planktonic oxygen and carbon stable isotopes, as well as the Uk'37 Sea Surface Temperature (SST) at the studied site during the investigated interval. The coccolithophore primary productivity, reconstructed from the PPP (primary productivity proxy = absolute values of Gephyrocapsa caribbeanica + small Gephyrocapsa group) revealed pronounced fluctuations, that were strongly associated with variations in the intensity of the regional Alboran Upwelling System. The comparison of the nannoplankton record with opal phytolith content for the studied site and the already available pollen record at the nearby Integrated Ocean Drilling Program Site U1385, suggests an association of the upwelling dynamics with the variability of the North Atlantic Oscillation-like (NAO-like) phase. High PPP during positive (+) NAO-like phases is the result of intensified upwelling, owing to the complete development of the surface hydrological structures at the Alboran Sea. This scenario was identified during the MIS 12/MIS 11 transition (428-422 kyr), the late MIS 11c (405-397 kyr), and MIS11 b to MIS 11a (397-376 kyr). Two short-term minima in the PPP and SST were observed during MIS 11 b and were coeval with the North Atlantic Heinrich-type (Ht) events Ht3 (∼390 kyr) and Ht2 (∼384 kyr). Increased abundance of the subpolar Coccolithus pelagicus subsp. pelagicus and Gephyrocapsa muellerae was consistent with the inflow of cold surface waters into the Mediterranean Sea during the Ht events. Lowered PPP during negative (−) NAO-like phases is the result of moderate upwelling by the incomplete development of surface hydrological structures at the Alboran Sea. This scenario is expressed during the early MIS 11c (422-405 kyr). Overall, the results of our study provide evidence of the important role of atmospheric circulation patterns in the North Atlantic region for controlling phytoplankton primary production and oceanographic circulation dynamics in the Western Mediterranean during MIS 11. © 2020 Elsevier Ltd
英文关键词	Alboran sea; Coccolithophore primary productivity; Interglacial; Marine isotope stage 11; Micropaleontology; North atlantic oscillation; Palaeoceanography; Western europe
语种	英语
scopus关键词	Atmospheric pressure; Infill drilling; Isotopes; Photosynthesis; Phytoplankton; Plankton; Submarine geology; Surface waters; Atmospheric circulation patterns; Carbon stable isotopes; Hydrological structure; Integrated ocean drilling programs; North Atlantic oscillations; Ocean drilling programs; Oceanographic circulation; Sea surface temperature (SST); Oceanography; atmospheric circulation; marine isotope stage; nanofossil; nanoplankton; Ocean Drilling Program; primary production; sea surface temperature; upwelling; Alboran Sea; Atlantic Ocean; Atlantic Ocean (North); Mediterranean Sea; Coccolithus pelagicus; Gephyrocapsa; Gephyrocapsa caribbeanica; Gephyrocapsa muellerae
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/151328
作者单位	Departamento de Geología, Universidad de Salamanca, Salamanca, 37008, Spain; Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus de Gambelas, Faro, 8005-139, Portugal; Divisão de Geologia e Georecursos Marinhos, Instituto Português do Mar e da Atmosfera (IPMA), Av. Doutor Alfredo Magalhães Ramalho 6, Algés, 1495-165, Portugal; Dipartimento di Scienze della Terra e Geoambientali, Università degli Studi di Bari Aldo Moro, Bari, Italy; Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, 08034, Spain; GRC Geociències Marines, Departament de Dinàmica de la Terra i de l'Oceà, Facultat de Ciències de la Terra, Universitat de Barcelona, Barcelona, 08028, Spain
推荐引用方式 GB/T 7714	González-Lanchas A.,Flores J.-A.,Sierro F.J.,et al. A new perspective of the Alboran Upwelling System reconstruction during the Marine Isotope Stage 11: A high-resolution coccolithophore record[J],2020,245.
APA	González-Lanchas A..,Flores J.-A..,Sierro F.J..,Bárcena M.Á..,Rigual-Hernández A.S..,...&Grimalt J.O..(2020).A new perspective of the Alboran Upwelling System reconstruction during the Marine Isotope Stage 11: A high-resolution coccolithophore record.Quaternary Science Reviews,245.
MLA	González-Lanchas A.,et al."A new perspective of the Alboran Upwelling System reconstruction during the Marine Isotope Stage 11: A high-resolution coccolithophore record".Quaternary Science Reviews 245(2020).