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

doi:10.1029/2020JF005731

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

	Holocene Climate Modulates Mud Supply, Transport, and Sedimentation on the East China Sea Shelf
	Dong, Jiang 2,3; Li, Anchun 2,5; Liu, Xiting 1,5; Wan, Shiming 2,5; Xu, Fangjian 4; Shi, Xuefa 3,5
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
	2020-10-01
卷号	125 期号:10 页码:18
ISSN号	2169-9003
DOI	10.1029/2020JF005731
通讯作者	Li, Anchun(acli@qdio.ac.cn)
英文摘要	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.
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
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000586451100001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/169072]
专题	海洋研究所_海洋地质与环境重点实验室
通讯作者	Li, Anchun
作者单位	1.Ocean Univ China, Coll Marine Geosci, Key Lab Submarine Geosci & Prospecting Tech, Qingdao, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao, Peoples R China 3.First Inst Oceanog, Key Lab Marine Geol & Metallogeny, Minist Nat Resources, Qingdao, Peoples R China 4.China Univ Petr, Sch Geosci, Qingdao, Peoples R China 5.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China
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.