Centennial-Millennial Scale Oscillations in the East Asian Monsoon

东亚季风的百年一千年尺度振荡

• 批准号: 9710097
• 负责人: Delia Oppo
• 金额: $ 31.29万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-07-01 至 2000-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9710097&HistoricalAwards=false
• 关键词: Centennial; Millennial; Scale; Oscillations; East

This project will analyze stable isotopes and taxonomic assemblage of planktic foraminifera in high-sedimentation-rate cores from the South China and Sulu Seas. The PIs postulate that large changes in oxygen isotopes observed for the last interstadial period reflect changes in monsoon-induced precipitation in the South China Sea. This assumption will be tested by comparing isotopic and taxonomic data; in the Sulu Sea, the relative roles of sea-surface temperature and salinity will be assessed by the same methods. Conclusions will be applied to a Global Circulation Model to assess the possible linkage of the regional monsoon and circulation changes in the North Atlantic.

本项目将分析中国南海和苏鲁海高沉积速率岩心中的浮游有孔虫稳定同位素和分类组合。PI假设，在最后一个间歇期观测到的氧同位素的大的变化反映了季风引起的南海降水的变化。将通过比较同位素和分类数据来检验这一假设;在苏禄海，将用同样的方法评估海面温度和盐度的相对作用。研究结论将应用于全球环流模式，以评估北大西洋区域季风和环流变化之间可能存在的联系。