Middle to late Miocene surface water history in the northern South China Sea (SCS): Relationship to the East Asian Monsoon (EAM) evolution and variability

南海北部（SCS）中新世中晚期地表水历史：与东亚季风（EAM）演化和变化的关系

• 批准号: 28668931
• 负责人: Professor Dr. Stephan Steinke
• 金额: --
• 依托单位: State Key Laboratory of Marine Environmental Science
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/28668931?language=en
• 关键词: Middle; late; Miocene; surface; water

The proposed study intends to investigate the evolution and variability of the East Asian Monsoon (EAM) for the middle to late Miocene (-15 Ma to 6 Ma), a period of drastic reorganization of global climate. To this end, sediment samples of Ocean Drilling Program (OOP) Leg 184 (Site 1146, 19°27.40 N, 116 16.37 E; water depth of 2092 m; northern South China Sea, SCS) will be analysed for planktonic foraminiferal Mg/Ca ratios (temperature proxy) and stabile oxygen isotopes (proxy of temperature, salinity, and global ice-volume). This integrated approach is a promising method to investigate the thermal and Hydrographie history of the northern SCS surface waters in order to understand the evolution and variability of the EAM during the middle to late Miocene. The objectives of this study are (a) to test hypotheses about the middle to late Miocene intensification of the East Asian summer monsoon, (b) to provide more detailed marine evidence for the evolution and variability of the EAM, and (c) to document the response of the northern SCS surface waters to the Neogene global cooling.

这项研究旨在研究东亚季风在中新世中晚期(-15 Ma至6 Ma)的演变和变化，这是一个全球气候剧烈重组的时期。为此，大洋钻探计划第184航段(1146站，北纬19°27.40，东经116 16.37；水深2092m；南海北部，中国，南海)的沉积物样品将被分析浮游有孔虫的镁/钙比(温度替代物)和稳定氧同位素(温度、盐度和全球冰量的替代物)。这种综合方法是研究南海北部表层水的热历史和水文历史，以了解中、晚中新世EAM的演化和变化的一种有前途的方法。这项研究的目的是(A)检验关于中新世晚期东亚夏季风加强的假说，(B)为东亚夏季风的演变和变化提供更详细的海洋证据，以及(C)记录南海北部表层水域对新近纪全球变冷的响应。