| 近1000年来西格陵兰荷尔斯泰因斯堡港生物硅指示的海洋生产力变化 |
| |
| 引用本文： | 沙龙滨,李冬玲,刘焱光,吴彬,吴燕妮,Knudsen Karen Luise,李中乔,徐皓.近1000年来西格陵兰荷尔斯泰因斯堡港生物硅指示的海洋生产力变化[J].海洋学报(英文版),2020,39(9):78-85. |
| |
| 作者姓名： | 沙龙滨 李冬玲 刘焱光 吴彬 吴燕妮 Knudsen Karen Luise 李中乔 徐皓 |
| |
| 作者单位： | 地理与空间信息技术系, 宁波大学, 宁波 315211;海洋地质过程与环境功能实验室, 青岛海洋科学与技术国家实验室, 青岛 266061;河口海岸学国家重点实验室, 华东师范大学, 上海 200062;海洋地质过程与环境功能实验室, 青岛海洋科学与技术国家实验室, 青岛 266061;海洋沉积与环境地质重点实验室, 自然资源部 第一海洋研究所, 青岛 266061;海洋生态系统与生物地球化学重点实验室, 自然资源部 第二海洋研究所, 杭州 310012;古气候与极地研究中心, 地球科学系, 奥胡斯大学, 丹麦奥胡斯, DK-8000 |
| |
| 基金项目： | The Open Research Fund of State Key Laboratory of Estuarine and Coastal Research under contract No. SKLEC-KF201708; the Project of Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology (Qingdao) under contract No. MGQNLM201707; the National Natural Science Foundation of China under contract Nos 41776193, 41876215, 41876070 and 41406209; the Natural Science Foundation of Zhejiang Province under contract Nos LY17D060001 and LQ15D020001; the Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao) under contract No. 2018SDKJ0104-3. |
| |
| 摘 要： | We analyzed the biogenic silica(BSi) content and produced a diatom-based summer sea-surface temperature(SST) reconstruction for sediment core GC4 from the Holsteinsborg Dyb, West Greenland. Our aim was to reconstruct marine productivity and climatic fluctuations during the last millennium. Increased BSi content and diatom abundance suggest relatively high marine productively during the interval of AD 1000–1400, corresponding in time to the Medieval Warm Period(MWP). The summer SST reconstruction indicates relatively warm conditions during AD 900–1100, followed by cooling after AD 1100. An extended cooling period during AD 1400–1900 is characterized by prolonged low in reconstructed SST and high sea-ice concentration. The BSi values fluctuated during this period, suggesting varying marine productivity during the Little Ice Age(LIA).There is no significant correlation between the BSi content and SST during the last millennium, suggesting that the summer SST has little influence on marine productively in the Holsteinsborg Dyb. A good correspondence between the BSi content and the element Ti counts in core GC4 suggests that silicate-rich meltwater from the Greenland ice sheet was likely responsible for changes in marine productively in the Holsteinsborg Dyb.
|
| 关 键 词： | 生物硅 海洋生产力 海水表层温度 海冰密集度 |
| 收稿时间： | 2019/12/9 0:00:00 |
Biogenic silica concentration as a marine primary productivity proxy in the Holsteinsborg Dyb, West Greenland, during the last millennium |
| |
| Sha Longbin,Li Dongling,Liu Yanguang,Wu Bin,Wu Yanni,Knudsen Karen Luise,Li Zhongqiao,Xu Hao.Biogenic silica concentration as a marine primary productivity proxy in the Holsteinsborg Dyb, West Greenland, during the last millennium[J].Acta Oceanologica Sinica,2020,39(9):78-85. |
| |
| Authors: | Sha Longbin Li Dongling Liu Yanguang Wu Bin Wu Yanni Knudsen Karen Luise Li Zhongqiao Xu Hao |
| |
| Institution: | Department of Geography and Spatial Information Techniques, Ningbo University, Ningbo 315211, China;Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China;State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China;Department of Geography and Spatial Information Techniques, Ningbo University, Ningbo 315211, China;Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China;Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China;Key Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China;Centre for Past Climate Studies and Arctic Research Centre, Department of Geoscience, Aarhus University, Aarhus C DK-8000, Denmark |
| |
| Abstract: | We analyzed the biogenic silica (BSi) content and produced a diatom-based summer sea-surface temperature (SST) reconstruction for sediment core GC4 from the Holsteinsborg Dyb, West Greenland. Our aim was to reconstruct marine productivity and climatic fluctuations during the last millennium. Increased BSi content and diatom abundance suggest relatively high marine productively during the interval of AD 1000–1400, corresponding in time to the Medieval Warm Period (MWP). The summer SST reconstruction indicates relatively warm conditions during AD 900–1100, followed by cooling after AD 1100. An extended cooling period during AD 1400–1900 is characterized by prolonged low in reconstructed SST and high sea-ice concentration. The BSi values fluctuated during this period, suggesting varying marine productivity during the Little Ice Age (LIA). There is no significant correlation between the BSi content and SST during the last millennium, suggesting that the summer SST has little influence on marine productively in the Holsteinsborg Dyb. A good correspondence between the BSi content and the element Ti counts in core GC4 suggests that silicate-rich meltwater from the Greenland ice sheet was likely responsible for changes in marine productively in the Holsteinsborg Dyb. |
| |
| Keywords: | biogenic silica marine productivity sea-surface temperature sea-ice concentration |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《海洋学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《海洋学报(英文版)》下载免费的PDF全文 |
|
