Collaborative Research: Southern Hemisphere Mid-Depth Water Masses and the Instability of the Ocean's Conveyor Circulation--The Marine Sediment Record from Southwest Africa

合作研究：南半球中深层水团与海洋输送环流的不稳定性--西南非洲海洋沉积物记录

• 批准号: 0222111
• 负责人: Christopher Charles
• 金额: $ 35.71万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-02-01 至 2007-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0222111&HistoricalAwards=false
• 关键词: Collaborative; Research; Southern; Hemisphere; Mid

Funds are provided for a cruise to collect a suite of cores from the Southwest African margin to construct several detailed depth transects to monitor the full dynamic range and stratal geometry of the mid depth water masses. The post-cruise proposed research program will establish the sensitivity of Southern Hemisphere ocean circulation to major instability during the Pleistocene and Holocene by mapping changes in the distribution of radiocarbon in benthic foraminifera over specific abrupt events to deduce the ventilation history of mid-depth water and help delineate northern vs. southern sources.

为一次巡航提供资金，从西南非洲边缘收集一套岩芯，以构建几个详细的深度横断面，以监测中深水团的完整动态范围和地层几何形状。巡航后拟议的研究方案将通过绘制特定突发事件期间底栖有孔虫中放射性碳分布的变化图来确定南半球海洋环流对更新世和全新世期间主要不稳定性的敏感性，以推断中层水的通风历史，并帮助描绘北方与南方的来源。