globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2017.02.013
论文题名:
A Last Interglacial record of environmental changes from the Sulmona Basin (central Italy)
作者: Regattieri E.; Giaccio B.; Nomade S.; Francke A.; Vogel H.; Drysdale R.N.; Perchiazzi N.; Wagner B.; Gemelli M.; Mazzini I.; Boschi C.; Galli P.; Peronace E.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
卷: 472
起始页码: 51
结束页码: 66
语种: 英语
英文关键词: Lacustrine succession ; Paleoclimate ; Stable isotopes ; Tephrochronology
英文摘要: Here we present a multiproxy record (δ13C, δ18O, major and minor element composition, mineralogy, and low-resolution biogenic silica content) from a lacustrine succession in the Sulmona Basin, central Italy. Based on previous tephrochronological constraints and a new 40Ar/39Ar dating of a tephra matching the widespread X-6 tephra, the record spans the ca. 129–92 ka period and documents at sub-orbital scale the climatic and environmental changes over the Last Interglacial and its transition to the Last Glacial period. The δ18O composition is interpreted as a proxy for the amount and seasonality of local precipitation, whereas variations in elemental and mineralogical composition are inferred to reflect climatic-driven changes in clastic sediment input. The observed variations are consistent among the different proxies, and indicate that periods of reduced precipitation were marked by enhanced catchment erosion, probably due to a reduction in vegetation cover. The first part of the Last Interglacial shows the most negative δ18O values. Comparison with pollen records from the Mediterranean suggests a greater seasonality of the precipitation at this time. At millennial-to-centennial time scales, comparison of the Sulmona record with speleothem δ18O records from central Italy highlights a highly coherent pattern of hydrological evolution, with enhanced variability and similar events of reduced precipitation consistently recorded by each isotope record. The observed intra-interglacial variability can potentially be linked, within the uncertainties associated with each age model, to similar variations observed in sea-surface temperature records from the Mediterranean and the North Atlantic, suggesting a link between Mediterranean hydrology and North Atlantic temperature and circulation patterns that persists during periods of low ice volume. © 2017 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/67894
Appears in Collections:过去全球变化的重建

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作者单位: Institute of Geology and Mineralogy, University of Cologne, Zülpicher Str. 49a, Cologne, Germany; Istituto di Geologia Ambientale e Geoingegneria, IGAG-CNR, Via Salaria km. 29.4, Monterotondo, Rome, Italy; Istituto di Geoscienze e Georisorse, IGG-CNR, Via Moruzzi 1, Pisa, Italy; Laboratoire des Sciences du Climat et de l'Environnement, IPSL, 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 MelbourneVictoria, Australia; EDYTEM, UMR CNRS 5204, Université de Savoie-Mont Blanc, Le Bourget du Lac-Cedex, France; Dipartimento di Scienze della Terra, University of Pisa, Via S. Maria 53, Pisa, Italy; Dipartimento di Protezione Civile, Via Vitorchiano 4, Rome, Italy

Recommended Citation:
Regattieri E.,Giaccio B.,Nomade S.,et al. A Last Interglacial record of environmental changes from the Sulmona Basin (central Italy)[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01,472
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