气候变化领域集成服务门户(CCPortal): Orbital-to-millennial scale climate variability during Marine Isotope Stages 5 to 3 in northeast Iberia

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DOI	10.1016/j.quascirev.2019.105946
	Orbital-to-millennial scale climate variability during Marine Isotope Stages 5 to 3 in northeast Iberia
	Pérez-Mejías C.; Moreno A.; Sancho C.; Martín-García R.; Spötl C.; Cacho I.; Cheng H.; Edwards R.L.
发表日期	2019
ISSN	0277-3791
卷号	224
英文摘要	The climate during the last glacial cycle was characterized by abrupt millennial-scale changes superimposed on long-term orbital control. This study examines this climate variability for northeast Iberia for the time interval 118.9 to 36.9 kyr using a multi-proxy approach (δ18O, δ13C and Mg/Ca) applied to a stalagmite that covers this period continuously. During Marine Isotope Stage (MIS) 5 and 4, δ18O is controlled by orbital pacing, whereby more humid conditions prevailed during minima in boreal summer precession. In contrast, during MIS 3 δ18O lags precession and co-varies with δ13C (ρ = 0.53, p-value < 0.001, n = 500), suggesting a common control of both isotopes by reduced precipitation during dry periods. δ13C shows a positive correlation with Mg/Ca, reflecting water availability, vegetation productivity and microbial activity in the catchment of the cave's drip water. The δ13C values exhibit a response to Heinrich Stadials (HS) and other cold marine events (e.g. C26 to C23), as well as Dansgaard-Oeschger oscillations (D-O). The Last Interglacial ended at 108.6 ± 0.3 kyr at this site. Two periods with a marked “W-shape” pattern in δ13C can be recognized between 70 and 50 kyr (hereafter multi-event). The older multi-event (including HS-6 and D-O 18) is characterized in the North Atlantic by high IRD discharges and cold sea-surface temperatures, while the two phases attending to the hydrology in the study area suggest dry conditions prior to HS-6. A dry climate prevailed during the younger multi-event (including HS-5a and D-O 15), coincident with an increase in productivity-related foraminifera species at lower latitudes, suggesting a reinforcement of the trade winds associated with a stronger Hadley Cell. © 2019 Elsevier Ltd
英文关键词	Last glacial period; Orbital-millennial scale; Stable isotopes; Stalagmite; Western mediterranean
语种	英语
scopus关键词	Catchments; Climatology; Isotopes; Oceanography; Productivity; Surface discharges; Surface waters; Last glacial period; Orbital-millennial scale; Stable isotopes; Stalagmite; Western Mediterranean; Glacial geology; carbon isotope; climate variation; foraminifera; humid tropics; Last Interglacial; marine isotope stage; microbial activity; oxygen isotope; precipitation (climatology); proxy climate record; reinforcement; sea level change; stalagmite; Atlantic Ocean; Atlantic Ocean (North); Iberian Peninsula; Foraminifera
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/151721
作者单位	Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, 710049, China; Department of Geoenvironmental Processes and Global Change, Pyrenean Institute of Ecology – CSIC, Avda. Montañana 1005, Zaragoza, 50059, Spain; Earth Sciences Department, University of Zaragoza, C/Pedro Cerbuna 12, Zaragoza, 50009, Spain; Station d'Ecologie Théorique et Expérimentale UMR 5321, CNRS, 2 route du CNRS, Moulis, 09200, France; Institute of Geology, University of Innsbruck, Innrain 52, Innsbruck, 6020, Austria; Dept. Dinàmica de la Terra i de l'Oceà, Facultat de Ciències de la Terra, Universitat de Barcelona, C/Martí Franques s/n, Barcelona, 08028, Spain; Department of Earth and Environmental Sciences, University of Minnesota, John T. Tate Hall, 116 Church Street SE, Minneapolis, MN 55455, United States
推荐引用方式 GB/T 7714	Pérez-Mejías C.,Moreno A.,Sancho C.,et al. Orbital-to-millennial scale climate variability during Marine Isotope Stages 5 to 3 in northeast Iberia[J],2019,224.
APA	Pérez-Mejías C..,Moreno A..,Sancho C..,Martín-García R..,Spötl C..,...&Edwards R.L..(2019).Orbital-to-millennial scale climate variability during Marine Isotope Stages 5 to 3 in northeast Iberia.Quaternary Science Reviews,224.
MLA	Pérez-Mejías C.,et al."Orbital-to-millennial scale climate variability during Marine Isotope Stages 5 to 3 in northeast Iberia".Quaternary Science Reviews 224(2019).