Recent sedimentary records in the East China Sea inner shelf and their response to environmental change and human activities
文献类型：期刊论文
| 作者 | Zhang Kaidi1,3 ; Li Anchun1,2; Zhang Jin1,3; Lu Jian1; Wang Hongli1
|
| 刊名 | JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| 出版日期 | 2018-09-01 |
| 卷号 | 36期号:5页码:1537-1555 |
| ISSN号 | 2096-5508 |
| 关键词 | East China Sea inner shelf grain size sedimentary records human activities environmental change |
| DOI | 10.1007/s00343-018-7028-6 |
| 通讯作者 | Li Anchun(acli@qdio.ac.cn) |
| 英文摘要 | The 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. |
| 资助项目 | National Natural Science Foundation of China[41430965] ; Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences[MGE2015KG08] |
| WOS研究方向 | Marine & Freshwater Biology ; Oceanography |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000450165300007 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/156415]  |
| 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.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：海洋研究所
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