Sedimentary signatures of the abrupt deglacial rise in sea level from the East China Sea inner shelf

doi:10.1016/j.ecss.2021.107423

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	Sedimentary signatures of the abrupt deglacial rise in sea level from the East China Sea inner shelf
	Chang, Fengming 1,2,4; Li, Tiegang 2,3; Zhuang, Lihua 1,2,4; Sun, Hanjie 1,2,4; Xiong, Zhifang 2,3; Sun, Rongtao 5
刊名	ESTUARINE COASTAL AND SHELF SCIENCE
	2021-09-05
卷号	258 页码:10
关键词	Sea-level signatures Deglacial meltwater pulses Abrupt cooling event East China Sea inner shelf
ISSN号	0272-7714
DOI	10.1016/j.ecss.2021.107423
通讯作者	Li, Tiegang(tgli@fio.org.cn)
英文摘要	Understanding the link between deglacial sea-level jumps and abrupt climate change may provide crucial insights into future ice-climate feedbacks. However, much ambiguity remains surrounding many of the last deglacial meltwater pulses. Here, we present a complete sedimentary succession from the inner shelf of the East China Sea, which has clearly documented multiple abrupt rises in the deglacial sea level. The results suggest that the postglacial sedimentary sequence, resting on a late Pleistocene basement of stiff clay, formed during a threestage process marked by characteristic lithology and foraminiferal fauna. The abrupt shifts in the sedimentary facies indicate that seawater firstly intruded into the inner shelf just before the onset of the slowdown in sea-level rise caused by the Younger Dryas cooling event and changed the inner shelf into a tidal flat environment, as demonstrated by the sudden appearance of both planktonic foraminifera and typical brackish-water species of benthic foraminifera. Meltwater pulse 1B (MWP-1B) is depicted by a sharp upward transition to a nearshore subtidal environment at 11.62 kyr. This episode of sea-level rise induced the initial flooding of the inner shelf, which is well documented by the sudden reduction in brackish-water foraminifera species and evident increase in inner-shelf benthic species. The prominent sea-level rise at approximately 7.54 kyr was responsible for the shift to stable inner shelf conditions and resulted in the maximum flooding of the inner shelf area, initiating subsequent formation of the alongshore mud wedge. Additionally, obvious peaks in both the benthic foraminifer abundance and the marine algae concentration at approximately 8.13 kyr confirm the previously identified sealevel jump at approximately 8.2 kyr, which coincides with the weakening of the Asian monsoon demonstrated by the peak grain size in our record, further indicating its apparent connection to the 8.2 kyr climatic reversal.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; National Special Project for Global Change and Air-Sea Interaction[GASI-GEOGE-04] ; National Natural Science Foundation of China[42076051] ; National Natural Science Foundation of China[41830539] ; National Natural Science Foundation of China[41876041]
WOS研究方向	Marine & Freshwater Biology ; Oceanography
语种	英语
出版者	ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
WOS记录号	WOS:000677909500002
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/175928]
专题	海洋研究所_海洋地质与环境重点实验室
通讯作者	Li, Tiegang
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China 3.SOA, Key Lab Marine Sedimentol & Environm Geol, Inst Oceanog 1, Qingdao 266061, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China 5.Shandong Univ Technol, Sch Resources & Environm Engn, Zibo 255049, Peoples R China
推荐引用方式 GB/T 7714	Chang, Fengming,Li, Tiegang,Zhuang, Lihua,et al. Sedimentary signatures of the abrupt deglacial rise in sea level from the East China Sea inner shelf[J]. ESTUARINE COASTAL AND SHELF SCIENCE,2021,258:10.
APA	Chang, Fengming,Li, Tiegang,Zhuang, Lihua,Sun, Hanjie,Xiong, Zhifang,&Sun, Rongtao.(2021).Sedimentary signatures of the abrupt deglacial rise in sea level from the East China Sea inner shelf.ESTUARINE COASTAL AND SHELF SCIENCE,258,10.
MLA	Chang, Fengming,et al."Sedimentary signatures of the abrupt deglacial rise in sea level from the East China Sea inner shelf".ESTUARINE COASTAL AND SHELF SCIENCE 258(2021):10.