Decadal to Century-Scale Climate Variability during the Holocene: Paired Mg/Ca and Oxygen Isotope Records from Cariaco and Santa Barbara Basins

全新世十年至百年尺度的气候变化：卡里亚科和圣巴巴拉盆地的成对镁/钙和氧同位素记录

• 批准号: 0315234
• 负责人: Robert Thunell
• 金额: $ 29.68万
• 依托单位: University South Carolina Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-15 至 2007-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0315234&HistoricalAwards=false
• 关键词: Decadal; Century; Scale; Climate; Variability

This proposal is funded to calibrate the Mg/Ca temperature proxy in multiple species of planktic foraminifers with hydrographic data from the Cariaco, Guaymas and Santa Barbara Basins to refine the Mg/Ca temperature proxy in multiple species of planktic foraminifers. The Mg/Ca proxy will then be compared with oxygen isotope and alkenone measurements on the same sediment trap samples. The Mg/Ca calibrations will be used to reconstruct the Holocene of the Cariaco and Santa Barbara Basins from laminated cores which have been AMS 14C dated and have detailed foraminiferal oxygen isotope records.

本研究旨在利用Cariaco、Guaymas和Santa Barbara盆地的水文数据，校准多种浮游有孔虫的Mg/Ca温度代用物，以完善多种浮游有孔虫的Mg/Ca温度代用物。然后将Mg/Ca代用物与氧同位素和烯酮在相同沉积物捕集器样品上的测量值进行比较。Mg/Ca校准将用于重建Cariaco和Santa Barbara盆地全新世的层状岩心，这些岩心已经过AMS 14C测年，并具有详细的有孔虫氧同位素记录。