Collaborative Research: Centennial Scale Records of the Atlantic Multi-decadal Oscillation

合作研究：大西洋数十年振荡的百年尺度记录

• 批准号: 0823268
• 负责人: Simon Thorrold
• 金额: $ 15万
• 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: 2008
• 资助国家: 美国
• 起止时间: 2008-09-15 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0823268&HistoricalAwards=false
• 关键词: Collaborative; Research; Centennial; Scale; Records

Swart/Hollander 0823636/0823268This award will provide funds to obtain new proxy records of the Atlantic Multidecadal Oscillation (AMO) over time periods between 100 to 1000 years using sclerosponge aragonite geochemistry (18O/16O and Sr/Ca), and to investigate possible artifacts in stable oxygen and carbon (13C/12C) isotope data due to alteration during the sampling of aragonitic skeletal material. Specific objectives include 1) the generation of sclerosponge geochemical data, combined with improved dating, to confirm a correlative link between salinity and AMO at multiple locations in the Bahamas and Caribbean both prior to and after the instrumental record (~1850), 2) improvement of the geochemical calibrations between temperature and Sr/Ca and d18O based on a new collection of ~ 24 sclerosponge specimens collected between 1986 and 1996 and 3) investigation of additional minor and trace elements as recorders of environmental conditions in the tropical subsurface environment. The Broader Impacts include the societal relevance of research directed at understanding a fundamental question of the climate system that could have a synergistic impact on human-contributed forcings of the climate system and support of research by undergraduate and graduate students.

Swart/Hollander 0823636/0823268该奖项将提供资金，以使用硬海绵文石地球化学（18O/16O 和 Sr/Ca）获取 100 至 1000 年期间大西洋多层振荡 (AMO) 的新代理记录，并调查可能的人工制品由于在稳定氧和碳 (13C/12C) 同位素数据中的变化文石骨骼材料的取样。具体目标包括 1) 生成硬化海绵地球化学数据，并结合改进的测年法，以确认仪器记录（约 1850 年）之前和之后巴哈马和加勒比海多个地点的盐度和 AMO 之间的相关性，2) 改进温度与 Sr/Ca 和 d18O 之间的地球化学校准基于 1986 年至 1986 年期间收集的约 24 个硬化海绵样本的新集合1996 年和 3) 对额外的微量元素和微量元素进行调查，作为热带地下环境中环境条件的记录器。 更广泛的影响包括旨在理解气候系统基本问题的研究的社会相关性，这些研究可能对人类对气候系统的影响产生协同影响，并支持本科生和研究生的研究。