气候变化领域集成服务门户(CCPortal): Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy)

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DOI	10.1016/j.quascirev.2019.04.024
	Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy)
	Regattieri E.; Giaccio B.; Mannella G.; Zanchetta G.; Nomade S.; Tognarelli A.; Perchiazzi N.; Vogel H.; Boschi C.; Drysdale R.N.; Wagner B.; Gemelli M.; Tzedakis P.
发表日期	2019
ISSN	0277-3791
起始页码	28
结束页码	43
卷号	214
英文摘要	Among past interglacial periods, Marine Isotope Stage (MIS)19 is particularly interesting because its orbital geometry is very similar to that of the present interglacial. Here we present a high-resolution (sub-centennial)multiproxy record covering the ca. 790-770 ka interval, i.e. the interglacial MIS 19c and the ensuing glacial inception of MIS 19b, from a lacustrine sediment sequence retrieved from the Sulmona Basin (central Italy). The record has an independent chronology based on radiometric dating of six volcanic ash layers, and the resulting age model has a mean associated uncertainty of ±2.6 kyr. Variations in sediment geochemistry and mineralogy are interpreted in terms of past hydrological and temperature changes. Several millennial and sub-millennial events of reduced precipitation are well expressed. Comparisons with continental and marine records from the mid-latitude and sub-polar North Atlantic suggest a broad spatial expression for the observed events. Events occurring within the interglacial are not clearly associated with changes in marine proxies in the Iberian Margin, although similarities with the record from the sub-polar North Atlantic can be recognized and tentatively linked to changes in local hydrography having a downstream effect amplified by changes in atmospheric circulation. During the glacial inception, changes in the Sulmona record are coherent with changes in North Atlantic records, with drier events likely associated with meltwater-induced intervals of AMOC weakening. An event at ca. 785.6 ka may also reflect oceanic changes caused by freshwater discharges from residual ice-sheets and an outburst flood, similar to the 8.2 ka event in the Holocene. © 2019 Elsevier Ltd
英文关键词	Central Italy; Interglacial variability; Lacustrine succession; MIS 19; Stable isotope geochemistry
语种	英语
scopus关键词	Exploratory geochemistry; Glacial geology; Isotopes; Minerals; Volcanoes; Atmospheric circulation; Central Italy; Interglacial variability; Lacustrine sediments; Lacustrine succession; Marine isotope stages; Sediment geochemistries; Stable isotopes; Oceanography; atmospheric circulation; chronology; Cordilleran Ice Sheet; geochemistry; glacial-interglacial cycle; Holocene; ice sheet; interglacial; lacustrine deposit; marine isotope stage; outburst; sediment chemistry; stable isotope; volcanic ash; Abruzzi; Atlantic Ocean; Atlantic Ocean (North); Iberian Margin; Italy; L'Aquila; Sulmona Basin
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/151925
作者单位	Dipartimento di Scienze della Terra, University of Pisa, Via S. Maria 53, Pisa, 56126, Italy; Istituto di Geoscienze e Georisorse, IGG-CNR, Via Moruzzi 1, Pisa, 56126, Italy; Istituto di Geologia Ambientale e Geoingegneria, IGAG-CNR, Via Salaria km. 29.4, Monterotondo, Rome, Italy; Laboratoire des Sciences du Climat et de l'Environnement, IPSL, UMR8212, laboratoire CEA/CNRS/UVSQ et Université de Paris-Saclay, Gif-Sur-Yvette, France; Institute of Geological Sciences & Oeschger Centre for Climate Change Research, University of Bern, Switzerland; School of Geography, University of Melbourne, Victoria, 3010, Australia; EDYTEM, UMR CNRS 5204, Université de Savoie-Mont Blanc, Le Bourget du Lac cedex, 73376, France; Institute of Geology and Mineralogy, University of Cologne, Zülpicher Str. 49a, Köln, 50674, Germany; Environmental Change Research Centre, Department of Geography, University College LondonEngland, United Kingdom
推荐引用方式 GB/T 7714	Regattieri E.,Giaccio B.,Mannella G.,et al. Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy)[J],2019,214.
APA	Regattieri E..,Giaccio B..,Mannella G..,Zanchetta G..,Nomade S..,...&Tzedakis P..(2019).Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy).Quaternary Science Reviews,214.
MLA	Regattieri E.,et al."Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy)".Quaternary Science Reviews 214(2019).