IOCAS-IR  > 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, Jian1,2,3,5; Li, Anchun1; Zhang, Jin1; Dong, Jiang4
2023-12-10
Source PublicationREGIONAL STUDIES IN MARINE SCIENCE
ISSN2352-4855
Volume65Pages:17
Corresponding AuthorLu, Jian(lujian@qdio.ac.cn)
AbstractThe 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.
KeywordEast China Sea Provenance Yangtze River Typhoon Human activity
DOI10.1016/j.rsma.2023.103074
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[42276052] ; Shandong Provincial Natural Science Foundation, China[ZR2020MD066]
WOS Research AreaEnvironmental Sciences & Ecology ; Marine & Freshwater Biology
WOS SubjectEcology ; Marine & Freshwater Biology
WOS IDWOS:001042320500001
PublisherELSEVIER
WOS KeywordEAST CHINA SEA ; SOUTH YELLOW SEA ; INNER SHELF ; PROVENANCE DISCRIMINATION ; MAGNETIC-PROPERTIES ; SURFACE SEDIMENTS ; GEOCHEMICAL COMPOSITIONS ; CONTINENTAL-SHELF ; SUBAQUEOUS DELTA ; CHANGJIANG RIVER
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Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/182650
Collection海洋地质与环境重点实验室
Corresponding AuthorLu, Jian
Affiliation1.Chinese Acad Sci, Inst Oceanol, CAS 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.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China
4.Minist Nat Resources, Inst Oceanog 1, Qingdao 266061, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Shandong, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
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.
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