IOCAS-IR  > 海洋地质与环境重点实验室
Recent sedimentary records in the East China Sea inner shelf and their response to environmental change and human activities
Zhang Kaidi1,3; Li Anchun1,2; Zhang Jin1,3; Lu Jian1; Wang Hongli1
2018-09-01
Source PublicationJOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN2096-5508
Volume36Issue:5Pages:1537-1555
Corresponding AuthorLi Anchun(acli@qdio.ac.cn)
AbstractThe East China Sea continental shelf is a unique area for the study of land-sea interactions and paleoenvironmental change because it receives a large amount of terrestrial material inputs. In recent decades, human activities and global climate change have greatly affected river discharges into the sea. However, changes in the deposition process caused by these factors in the East China Sea continental shelf are unclear. We collected eight short sediment cores from the East China Sea inner shelf (ECSIS) using a box core sampler in 2012 and 2015. The grainsize, Pb-210, and Cs-137 of these cores were analyzed in order to reconstruct the deposition history since the 1950s, and to reveal human activity and climate change infl uences on sediment deposition in the ECSIS. Results indicated that sediment grain size became finer after 1969, turned coarser after 1987, and then further coarser since 2003, corresponding well to the three steps of sediment load drop in the Changjiang (Yangtze) River, which are mainly caused by human activities (particularly the closure of the Three Gorges Dam). Simultaneously, the East Asian Monsoon influenced the deposition process in the ECSIS by changing the intensity of coastal currents. Mean grain size variations in the fine-grained population (divided by grain size vs. standard deviation method) coincided with that of the East Asian Winter Monsoon strength and reflected its weakness in 1987. Abrupt changes in sediment grain size over a short time scale in these sediment cores were generally caused by floods and typhoons. Spectral analyses of the sediment cores showed periodicities of 10-11 and 20-22 years, corresponding to the periodicity of solar activity (Schwabe cycle and Hale cycle). Mean grain size time series also displayed a 3-8 year periodicity corresponding to El Nino Southern Oscillation periodic change.
KeywordEast China Sea inner shelf grain size sedimentary records human activities environmental change
DOI10.1007/s00343-018-7028-6
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41430965] ; Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences[MGE2015KG08]
WOS Research AreaMarine & Freshwater Biology ; Oceanography
WOS SubjectLimnology ; Oceanography
WOS IDWOS:000450165300007
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/156416
Collection海洋地质与环境重点实验室
Corresponding AuthorLi Anchun
Affiliation1.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.Univ Chinese Acad Sci, Beijing 100049, 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
Zhang Kaidi,Li Anchun,Zhang Jin,et al. Recent sedimentary records in the East China Sea inner shelf and their response to environmental change and human activities[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2018,36(5):1537-1555.
APA Zhang Kaidi,Li Anchun,Zhang Jin,Lu Jian,&Wang Hongli.(2018).Recent sedimentary records in the East China Sea inner shelf and their response to environmental change and human activities.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,36(5),1537-1555.
MLA Zhang Kaidi,et al."Recent sedimentary records in the East China Sea inner shelf and their response to environmental change and human activities".JOURNAL OF OCEANOLOGY AND LIMNOLOGY 36.5(2018):1537-1555.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang Kaidi]'s Articles
[Li Anchun]'s Articles
[Zhang Jin]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang Kaidi]'s Articles
[Li Anchun]'s Articles
[Zhang Jin]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang Kaidi]'s Articles
[Li Anchun]'s Articles
[Zhang Jin]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.