Multidecadal to Centennial Scale Variability in the Surface Ocean of the Northern Gulf of Mexico over the Late Holocene

全新世晚期墨西哥湾北部表层海洋的数十年至百年尺度变化

• 批准号: 0902921
• 负责人: Terrence Quinn
• 金额: $ 34.13万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-15 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0902921&HistoricalAwards=false
• 关键词: Multidecadal; Centennial; Scale; Variability; Surface

With this award the PI will develop highly resolved records of mean annual surface temperature and d18O(water) variability from the Northern Gulf of Mexico over past 3000 years. The PI will document the magnitude and spatial character of variability, and explore the results in the context of previous work that has shown spectral peaks in geochemical and faunal variability linked to solar output. The proposed work will test several hypotheses: 1) that significant changes in mean annual sea surface temperature (SST) occurred in response to the Little Ice Age and Medieval Warm Periods, 2) that mean annual SST approached modern levels several times over the study interval, and 3) that surface ocean variability in the Gulf of Mexico is linked to solar variability. Broader impacts include generation of records of natural climate variability on human timescales (i.e., the last few thousands years), and graduate and undergraduate involvement in research and fieldwork.

有了这一奖项，PI将开发出过去3000年来墨西哥湾北部年平均表面温度和d18O(水)变化的高度分辨率记录。PI将记录变率的大小和空间特征，并在以前工作的背景下探索结果，这些工作显示了与太阳输出有关的地球化学和动物群变率的光谱峰值。拟议的工作将检验几个假设：1)年平均海洋表面温度(SST)的显著变化是对小冰期和中世纪暖期的响应，2)在研究期间，年平均SST数次接近现代水平，3)墨西哥湾表层海洋的变化与太阳变化有关。更广泛的影响包括在人类时间尺度(即过去几千年)上产生自然气候变化的记录，以及研究生和本科生参与研究和实地工作。