Holocene Climate Modulates Mud Supply, Transport, and Sedimentation on the East China Sea Shelf

doi:10.1029/2020JF005731

IOCAS-IR > 海洋地质与环境重点实验室

	Holocene Climate Modulates Mud Supply, Transport, and Sedimentation on the East China Sea Shelf
	Dong, Jiang 1,2; Li, Anchun 2,3; Liu, Xiting 3,4; Wan, Shiming 2,3; Xu, Fangjian 5; Shi, Xuefa 1,3
	2020-10-01
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
ISSN	2169-9003
卷号	125 期号:10 页码:18
通讯作者	Li, Anchun(acli@qdio.ac.cn)
摘要	Shelf mud is an important sink for fluvial sediment, and it is sensitive to variations in river discharge and ocean circulation, which are significantly influenced by climate change. However, the evolution of shelf mud in response to climate change during the Holocene is poorly understood. Here, we present high-resolution sedimentary records of heavy minerals and mass accumulation rates (MARs) from the East China Sea shelf to study the response mechanisms of the Holocene shelf mud supply, transport, and sedimentation to the climate-driven variations in fluvial discharge and ocean currents. The results indicate that the shelf mud primarily originates from the Changjiang (Yangtze) River and has been mainly transported by wind-driven longshore currents in suspension since approximately 8.0 ka. A comparison of the MARs with several shelf mud sedimentation-rate records and climate changes during the Holocene on millennial timescales showed that strong (weak) precipitation in the river basin, which is positively linked with Asian summer monsoon and El Nino-driven storms, could intensify (weaken) the fluvial sediment supply, thereby increasing (decreasing) the shelf mud deposition flux. On multicentennial timescales, changes in the relative intensities of different ocean currents due to climate oscillations during the Holocene could generate frequent migrations of the current shear front (a hydrodynamic barrier), which has trapped an abundance of suspended materials on the shoreward side and resulted in rapid mud sedimentation (similar to 2.3 g/cm(2)/year) at different sites during different periods. Therefore, our study highlights that the Holocene shelf mud evolution responds sensitively to climate changes on different timescales.
DOI	10.1029/2020JF005731
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41430965] ; National Natural Science Foundation of China[41606062] ; National Natural Science Foundation of China[U1606401] ; National Program on Global Change and Air-Sea Interaction[GASI-GEOGE-03] ; Qingdao Postdoctoral Applied Research Project[2019254]
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000586451100001
出版者	AMER GEOPHYSICAL UNION
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/169073
专题	海洋地质与环境重点实验室
通讯作者	Li, Anchun
作者单位	1.First Inst Oceanog, Key Lab Marine Geol & Metallogeny, Minist Nat Resources, Qingdao, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China 4.Ocean Univ China, Coll Marine Geosci, Key Lab Submarine Geosci & Prospecting Tech, Qingdao, Peoples R China 5.China Univ Petr, Sch Geosci, Qingdao, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Dong, Jiang,Li, Anchun,Liu, Xiting,et al. Holocene Climate Modulates Mud Supply, Transport, and Sedimentation on the East China Sea Shelf[J]. JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE,2020,125(10):18.
APA	Dong, Jiang,Li, Anchun,Liu, Xiting,Wan, Shiming,Xu, Fangjian,&Shi, Xuefa.(2020).Holocene Climate Modulates Mud Supply, Transport, and Sedimentation on the East China Sea Shelf.JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE,125(10),18.
MLA	Dong, Jiang,et al."Holocene Climate Modulates Mud Supply, Transport, and Sedimentation on the East China Sea Shelf".JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE 125.10(2020):18.

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