The Isotopic Signature of Upwelling in the Arabian Sea

阿拉伯海上升流的同位素特征

• 批准号: 8710782
• 负责人: George Lohmann
• 金额: $ 10.61万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-10-15 至 1990-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8710782&HistoricalAwards=false
• 关键词: Isotopic; Signature; Upwelling; Arabian; Sea

The PI proposes to study the history of the Asian monsoon by looking at geologic parameters which are sensitive to the oceanographic effects of the monsoon such as: regional gradients in the thermocline, sea-surface temperature, and upwelling intensity. Foraminifera from sediment traps in the Arabian Sea will be used to monitor the isotopic and faunal response of the foraminifera to the monsoon-induced temperature changes. The isotopic and faunal signal in the sediment trap results will be used to trace the geologic history of the monsoon in sedimentary cores. The PIs will concentrate on geologic periods thought to represent extremes in monsoon seasonality in order to monitor monsoonal history on glacial-interglacial time scales.

PI建议通过观察对季风的海洋学影响敏感的地质参数来研究亚洲季风的历史，例如：温跃层的区域梯度、海面温度和上升流强度。从阿拉伯海沉积物捕获的有孔虫将被用于监测有孔虫的同位素和动物对季风引起的温度变化的响应。沉积物圈闭结果中的同位素和动物信号将用于追踪沉积岩心中季风的地质历史。为了在冰期-间冰期时间尺度上监测季风历史，pi将集中于被认为代表季风季节极端的地质时期。