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DOI	10.1016/j.quascirev.2019.106143
	A 45 kyr laminae record from the Dead Sea: Implications for basin erosion and floods recurrence
	Lu Y.; Bookman R.; Waldmann N.; Marco S.
发表日期	2020
ISSN	0277-3791
卷号	229
英文摘要	Recording and analyzing how climate change impacts flood recurrence, basin erosion, and sedimentation can improve our understanding of these systems. The aragonite-detritus laminae couplets comprising the lacustrine formations that were deposited in the Dead Sea are considered as faithful monitors of the freshwater supply to the lakes. We count a total of ∼5600 laminae couplets deposited in the last 45 kyr (MIS3-MIS1) at the Dead Sea center, which encompass the upper 142 m of the ICDP Core 5017-1. The present study shows that aragonite and detritus laminae are thinner and occur at high frequency during MIS 3-2, while they are much thicker and less frequent during MIS 1. By analyzing multiple climate-connected factors, we propose that significant lake-level drops, enhanced dust input, and low vegetative cover in the drainage basin during the last deglaciation (22-11.6 ka) have considerably increased erodible materials in the Dead Sea watershed. We find a decoupling existed between the significant lake-level drop/lake size reduction and lamina thickness change during the last deglaciation. We argue that during the Last Glacial and the Holocene, the variation of lamina thickness at the multiple-millennium scale was not controlled directly by the lake-level/size change. We interpret this decoupling implying the transport capacity of flash-floods is low and might be saturated by the oversupply of erodible materials, and indicating a transport-limited regime during the time period. We suggest the observed thickness and frequency distribution of aragonite-detritus laminae points to the high frequency of small-magnitude floods during the Last Glacial, in contrast to low frequency, but large-magnitude floods during the Holocene. © 2019 Elsevier Ltd
英文关键词	Aragonite-detritus laminae; Basin erosion; Climate change; Dead Sea; Flash-floods; Magnitude-frequency; Paleolimnology; Transport-limited regime
语种	英语
scopus关键词	Carbonate minerals; Catchments; Drops; Erosion; Floods; Glacial geology; Lakes; Paleolimnology; Seawater; Aragonite-detritus laminae; Dead sea; Flash flood; Magnitude-frequency; Transport-limited regime; Climate change; basin analysis; climate change; climate effect; erosion; flash flood; flood; flood frequency; historical record; Holocene; Last Glacial; magnitude; marine isotope stage; paleolimnology; sedimentation; Dead Sea
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/151609
作者单位	Sedimentology and Marine Paleoenvironmental Dynamics Group, Institute of Earth Sciences, Heidelberg University, Heidelberg, 69120, Germany; Dr. Moses Strauss Department of Marine Geosciences, Leon H. Charney School of Marine Sciences, University of Haifa, Mount Carmel3498838, Israel; Department of Geophysics, Tel Aviv University, Tel Aviv, 6997801, Israel
推荐引用方式 GB/T 7714	Lu Y.,Bookman R.,Waldmann N.,et al. A 45 kyr laminae record from the Dead Sea: Implications for basin erosion and floods recurrence[J],2020,229.
APA	Lu Y.,Bookman R.,Waldmann N.,&Marco S..(2020).A 45 kyr laminae record from the Dead Sea: Implications for basin erosion and floods recurrence.Quaternary Science Reviews,229.
MLA	Lu Y.,et al."A 45 kyr laminae record from the Dead Sea: Implications for basin erosion and floods recurrence".Quaternary Science Reviews 229(2020).