Initial deglaciation of the Laurentide Ice Sheet: A Gulf of Mexico perspective

劳伦泰德冰盖的初始消融：墨西哥湾的视角

• 批准号: 0903017
• 负责人: Benjamin Flower
• 金额: $ 11.8万
• 依托单位: University of South Florida
• 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: 2009-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0903017&HistoricalAwards=false
• 关键词: Initial; deglaciation; Laurentide; Ice; Sheet

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).This award supports an investigation of the deglacial record in the Gulf of Mexico, specifically the timing of the initial melting of the Laurentide Ice Sheet (LIS). The PI will use a multi-proxy approach (d18O, Mg/Ca, and Ba/Ca) to detect salinity anomalies associated with the input of meltwater via the Mississippi River. The records will test the hypothesis that LIS melting was synchronized with Northern and Southern Hemisphere mid-latitude glacial melt, and comparison of the results with proxies records of the Atlantic Meridional Overturning Circulation (AMOC) will help assess the role of LIS meltwater in early deglacial AMOC changes and associated climate shifts. Results will be incorporated into the SynTraCE21,000 model-data comparison effort. Funding will support a PhD student, who will also lead the marine geology component of an oceanography camp for girls during each summer of the award term.

该奖项是根据2009年《美国复苏和再投资法案》(公法111-5)资助的。该奖项支持对墨西哥湾的冰川消融记录的调查，特别是劳伦蒂德冰盖(LIS)最初融化的时间。PI将使用多指标方法(d18O、镁/钙和巴/钙)来检测与通过密西西比河输入的融水相关的盐度异常。这些记录将检验LIS融化与南北半球中纬度冰川融化同步的假设，并将结果与大西洋子午线翻转环流(AMOC)的替代记录进行比较，将有助于评估LIS融水在早期去冰期AMOC变化和相关气候变化中的作用。结果将被纳入SynTraCE21,000模型数据比较工作。资助将支持一名博士生，该博士生还将在获奖期间的每个夏天领导一个女孩海洋学夏令营的海洋地质学部分。