Sedimentary record off the Yangtze River estuary and its response to typhoons and human activities over the past 70 years

doi:10.1016/j.rsma.2023.103074

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 record off the Yangtze River estuary and its response to typhoons and human activities over the past 70 years
	Lu, Jian 1,2,3,5; Li, Anchun 2; Zhang, Jin 2; Dong, Jiang 4
刊名	REGIONAL STUDIES IN MARINE SCIENCE
	2023-12-10
卷号	65 页码:17
关键词	East China Sea Provenance Yangtze River Typhoon Human activity
ISSN号	2352-4855
DOI	10.1016/j.rsma.2023.103074
通讯作者	Lu, Jian(lujian@qdio.ac.cn)
英文摘要	The muddy area off the Yangtze River estuary serves as an archive that can be investigated to unravel the impacts of environmental changes and human activities. However, in the context of increasing human activity and global climate change, it is unclear how the sedimentary records in this area respond to these changes. Radionuclide activity, magnetic susceptibility, grain size, clay minerals and chemical elements of samples in a sediment core (T1) collected off the Yangtze River estuary were analyzed in this study to identify the sediment provenance and elucidate the impacts of typhoon events and human activities on the sedimentary records over the past 70 years. Based on the analyses of clay minerals, Cr/Th vs. Sc/Al, element ratios, and correlations between grain size and magnetic susceptibility, sediments at 44-90 cm were mainly derived from the Yangtze River, while sediments at 0-44 cm were influenced by the Yangtze River, old Yellow River, and relict sand. Since AD 1950, the mineralogical-geochemical compositions of sediments in core T1 have significantly altered, which was attributed to typhoon events and human activities. Before 2003, typhoon activity influenced the frequency of sand layer deposition, which was related to El NinoSouthern Oscillation (ENSO) variations. However, following the operation of the Three Gorges Dam in 2003, the relationship between typhoon event records and ENSO was disrupted. Human activities have affected the sedimentary records of typhoon events off the Yangtze River estuary. This study emphasizes that sediments at the edge of the muddy area off the Yangtze River estuary can serve as good records of typhoon events, but the influence of human activities should be considered when studying the relationship between typhoon activity and climate change, especially during the past several decades.& COPY; 2023 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China (NSFC)[42276052] ; Shandong Provincial Natural Science Foundation, China[ZR2020MD066]
WOS关键词	EAST CHINA SEA ; SOUTH YELLOW SEA ; INNER SHELF ; PROVENANCE DISCRIMINATION ; MAGNETIC-PROPERTIES ; SURFACE SEDIMENTS ; GEOCHEMICAL COMPOSITIONS ; CONTINENTAL-SHELF ; SUBAQUEOUS DELTA ; CHANGJIANG RIVER
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:001042320500001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/182649]
专题	海洋研究所_海洋地质与环境重点实验室
通讯作者	Lu, Jian
作者单位	1.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Shandong, Peoples R China 4.Minist Nat Resources, Inst Oceanog 1, Qingdao 266061, Peoples R China 5.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Lu, Jian,Li, Anchun,Zhang, Jin,et al. Sedimentary record off the Yangtze River estuary and its response to typhoons and human activities over the past 70 years[J]. REGIONAL STUDIES IN MARINE SCIENCE,2023,65:17.
APA	Lu, Jian,Li, Anchun,Zhang, Jin,&Dong, Jiang.(2023).Sedimentary record off the Yangtze River estuary and its response to typhoons and human activities over the past 70 years.REGIONAL STUDIES IN MARINE SCIENCE,65,17.
MLA	Lu, Jian,et al."Sedimentary record off the Yangtze River estuary and its response to typhoons and human activities over the past 70 years".REGIONAL STUDIES IN MARINE SCIENCE 65(2023):17.