气候变化领域集成服务门户(CCPortal): Climatic reconstruction for the Younger Dryas/Early Holocene transition and the Little Ice Age based on paleo-extents of Argentière glacier (French Alps)

CCPortal

DOI	10.1016/j.quascirev.2019.105863
	Climatic reconstruction for the Younger Dryas/Early Holocene transition and the Little Ice Age based on paleo-extents of Argentière glacier (French Alps)
	Protin M.; Schimmelpfennig I.; Mugnier J.-L.; Ravanel L.; Le Roy M.; Deline P.; Favier V.; Buoncristiani J.-F.; Aumaître G.; Bourlès D.L.; Keddadouche K.; Consortium: ASTER Team
发表日期	2019
ISSN	0277-3791
卷号	221
英文摘要	Investigation of Holocene extents of mountain glaciers along with the related naturally-driven climate conditions helps improve our understanding of glacier sensitivity to ongoing climate change. Here, we present the first Holocene glacial chronology in the Mont-Blanc massif (Argentière glacier) in the French Alps, based on 25 in situ-produced cosmogenic 10Be dates of moraines and glacial bedrocks. The obtained ages from mapped sequences of moraines at three locations reveal that the glacier retreated from its Lateglacial extent and oscillated several times between ∼11.7 ka and ∼10.4 ka, i.e. during the Younger Dryas/Early Holocene (YD/EH) transition, before substantially retreating at ∼10.4 ka. Climate conditions corresponding to the past extents of Argentière glacier during the YD/EH transition (∼11 ka) and the Little Ice Age (LIA) were modelled with two different approaches: by determining summer temperature differences from reconstructed ELA-rises and by using a Positive Degree Day (PDD) mass-balance model. The ELA-rise reconstructions yield a possible range of temperatures for the YD/EH transition that were lower by between 3.0 and 4.8 °C compared to the year 2008, depending on the choice of the ELA sensitivity to temperature. The results from the PDD model indicate temperatures lower by ∼3.6–5.5 °C during the YD/EH transition than during the 1979–2002 period. For the LIA, our findings highlight the role of local precipitation changes, superimposed on the dominant temperature signal, in the detailed evolution of the glacier. Overall, this study highlights the challenge that remains in accurately inferring paleoclimate conditions from past glacier extents. © 2019 Elsevier Ltd
英文关键词	Cosmogenic nuclides; French Alps; Glaciation; Glacier fluctuations; Holocene; Moraine dating; Paleoclimate reconstruction; PDD modeling; Western Europe
语种	英语
scopus关键词	Climate change; Climate models; Ice; Cosmogenic nuclides; French Alps; Glaciation; Glacier fluctuations; Holocenes; Moraine dating; Paleoclimate reconstruction; PDD model; Western Europe; Glacial geology; chronology; climate conditions; cosmogenic radionuclide; glacial environment; Holocene; Little Ice Age; moraine; paleoclimate; reconstruction; temperature profile; Younger Dryas; Alps; France
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/151785
作者单位	Aix-Marseille Univ, CNRS, IRD, INRA, Coll France, CEREGE, Aix-en-Provence, 13545, France; Université Grenoble Alpes, Université, Savoie Mont Blanc, CNRS, ISTerre, Chambéry, 73000, France; Université Grenoble Alpes, Université, Savoie Mont Blanc, CNRS, EDYTEM, Chambéry, 73000, France; Université Grenoble Alpes, CNRS, IRD, Grenoble INP, IGE, Grenoble, France; Biogéosciences, UMR 6282 CNRS, Université Bourgogne Franche-Comté, 6 Boulevard Gabriel, Dijon, 21000, France
推荐引用方式 GB/T 7714	Protin M.,Schimmelpfennig I.,Mugnier J.-L.,et al. Climatic reconstruction for the Younger Dryas/Early Holocene transition and the Little Ice Age based on paleo-extents of Argentière glacier (French Alps)[J],2019,221.
APA	Protin M..,Schimmelpfennig I..,Mugnier J.-L..,Ravanel L..,Le Roy M..,...&Consortium: ASTER Team.(2019).Climatic reconstruction for the Younger Dryas/Early Holocene transition and the Little Ice Age based on paleo-extents of Argentière glacier (French Alps).Quaternary Science Reviews,221.
MLA	Protin M.,et al."Climatic reconstruction for the Younger Dryas/Early Holocene transition and the Little Ice Age based on paleo-extents of Argentière glacier (French Alps)".Quaternary Science Reviews 221(2019).