Surface sediment characteristics related to provenance and ocean circulation in the Drake Passage sector of the Southern Ocean
文献类型：期刊论文
| 作者 | Wu, Shuzhuang; Kuhn, Gerhard; Diekmann, Bernhard; Lembke-Jene, Lester; Tiedemann, Ralf; Zheng, Xufeng; Ehrhardt, Sophie; Arz, Helge W.; Lamy, Frank |
| 刊名 | DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
 |
| 出版日期 | 2019 |
| 卷号 | 154页码:103135 |
| 关键词 | Drake passage Provenance Mineralogy Sortable-silt Current speed |
| DOI | 10.1016/j.dsr.2019.103135 |
| 英文摘要 | Understanding present-day sediment provenance and transport processes is crucial for studies about the dynamics of ocean circulation, as well as for paleoclimate reconstructions in the Drake Passage (DP), a key area for Earth's global oceanic circulation and climate during past and future. Based on a comprehensive set of surface sediment samples, we used spatial variations in grain-size distribution, bulk sediment mineralogy, silt and clay mineralogy across the entire DP region to elucidate the terrigenous sources and transport mechanisms. The statistical evaluation of these data identifies southern Patagonia (carbonate, illite, chlorite, feldspar and quartz) and the Antarctic Peninsula (chlorite, smectite, and amphibole) as the main sources for terrigenous sediments in the DP region. Different current systems are transporting the sediment material. Here, we provide a new, robust flow speed calibration for silt grain-sizes to enable the reconstruction of Antarctic Circumpolar Current (ACC) dynamics in the DP sector of the Southern Ocean. We correlated the sortable silt mean grain-size records of surface sediments with adjacent long-term current meter data. A clear bottom current speed pattern shows the variability of the ACC in the DP responding to the dynamics of ocean fronts, in agreement with modern observation. |
| 资助机构 | Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research; China Scholarship Council (CSC)China Scholarship Council [201604910671]; AWI ; Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research; China Scholarship Council (CSC)China Scholarship Council [201604910671]; AWI |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18241]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 推荐引用方式 GB/T 7714 | Wu, Shuzhuang,Kuhn, Gerhard,Diekmann, Bernhard,et al. Surface sediment characteristics related to provenance and ocean circulation in the Drake Passage sector of the Southern Ocean[J]. DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,2019,154:103135. |
| APA | Wu, Shuzhuang.,Kuhn, Gerhard.,Diekmann, Bernhard.,Lembke-Jene, Lester.,Tiedemann, Ralf.,...&Lamy, Frank.(2019).Surface sediment characteristics related to provenance and ocean circulation in the Drake Passage sector of the Southern Ocean.DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,154,103135. |
| MLA | Wu, Shuzhuang,et al."Surface sediment characteristics related to provenance and ocean circulation in the Drake Passage sector of the Southern Ocean".DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS 154(2019):103135. |
入库方式： OAI收割
来源：南海海洋研究所
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