气候变化领域集成服务门户(CCPortal): Linking Danube River activity to Alpine Ice-Sheet fluctuations during the last glacial (ca. 33–17 ka BP): Insights into the continental signature of Heinrich Stadials

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DOI	10.1016/j.quascirev.2019.106136
	Linking Danube River activity to Alpine Ice-Sheet fluctuations during the last glacial (ca. 33–17 ka BP): Insights into the continental signature of Heinrich Stadials
	Martinez-Lamas R.; Toucanne S.; Debret M.; Riboulot V.; Deloffre J.; Boissier A.; Cheron S.; Pitel M.; Bayon G.; Giosan L.; Soulet G.
发表日期	2020
ISSN	0277-3791
卷号	229
英文摘要	Offshore archives retrieved from marine/lacustrine environments receiving sediment from large river systems are valuable Quaternary continental records. In the present study, we reconstruct the Danube River activity at the end of the last glacial period based on sedimentological, mineralogical and geochemical analyses performed on long-piston cores from the north-west Black Sea margin. Our data suggest that the Danube River produced hyperpycnal floods throughout the ca. 33–17 ka period. Four main periods of enhanced Danube flood frequency, each of 1.5–3 kyr duration, are recorded at ca. 32.5–30.5 ka (equivalent to the first part of Heinrich Stadial –HS– 3), at ca. 29–27.5 ka (equivalent to Greenland Stadial 4), at ca. 25.3–23.8 ka (equivalent to HS 2) and at ca. 22.3–19 ka. Based on mineralogical and geochemical data, we relate these events to enhanced surface melting of the Alpine Ice Sheet (AIS) that covered ∼50,000 km2 of the Danube watershed at the Last Glacial Maximum (LGM). Our results suggest that (i) the AIS growth from the inner Alps to its LGM position in the northern Alpine foreland started from ca. 30.5 ka, ended no later than ca. 25.3 ka, and was interrupted by a melting episode ca. 29–27.5 ka; (ii) the AIS volume drastically decreased from ca. 22.3 to 19 ka, as soon as summer insolation energy at the AIS latitude increased; and (iii) HSs strongly impacted the AIS mass balance through enhanced summer surface melt. This, together with evidence of severely cool winters and the rapid expansion of sea ice in the North Atlantic, implies strong seasonality in continental Europe during stadials. © 2019 Elsevier Ltd
英文关键词	Alpine ice sheet; Black sea; Danube river; Floods; Heinrich stadials; Hyperpycnites; Seasonality
语种	英语
scopus关键词	Analytical geochemistry; Floods; Glacial geology; Glaciers; Melting; Offshore oil well production; Sea ice; Black sea; Danube rivers; Heinrich stadials; Hyperpycnites; Ice sheet; Seasonality; Rivers; continental interior; cooling; flooding; geochemical survey; Heinrich event; ice sheet; insolation; Last Glacial Maximum; paleoenvironment; seasonality; sedimentology; Alps; Arctic; Atlantic Ocean; Atlantic Ocean (North); Black Sea; Danube River; Greenland
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/151608
作者单位	Normandie Univ., UNIROUEN, UNICAEN, CNRS, M2C, Rouen, F-76000, France; IFREMER, Unité de Recherche Géosciences Marines, Plouzané, F-29280, France; Department of Geology and Geophysics, Woods Hole Oceanographic Institution, 266 Woods Hole Road, Woods Hole, MA 02543, United States
推荐引用方式 GB/T 7714	Martinez-Lamas R.,Toucanne S.,Debret M.,等. Linking Danube River activity to Alpine Ice-Sheet fluctuations during the last glacial (ca. 33–17 ka BP): Insights into the continental signature of Heinrich Stadials[J],2020,229.
APA	Martinez-Lamas R..,Toucanne S..,Debret M..,Riboulot V..,Deloffre J..,...&Soulet G..(2020).Linking Danube River activity to Alpine Ice-Sheet fluctuations during the last glacial (ca. 33–17 ka BP): Insights into the continental signature of Heinrich Stadials.Quaternary Science Reviews,229.
MLA	Martinez-Lamas R.,et al."Linking Danube River activity to Alpine Ice-Sheet fluctuations during the last glacial (ca. 33–17 ka BP): Insights into the continental signature of Heinrich Stadials".Quaternary Science Reviews 229(2020).