Atmospheric Dust in West Antarctic Ice: WAISCORES

南极西部冰层中的大气尘埃：WAISCORES

• 批准号: 9526973
• 负责人: Pierre Biscaye
• 金额: $ 8万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-01-15 至 1997-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9526973&HistoricalAwards=false
• 关键词: Atmospheric; Dust; West; Antarctic; Ice

This award is for support for a one year pilot study to work on atmospheric dusts from ice cores that already exist. Specifically, the deep ice cores from Byrd Station and a shallow core (160 m) that was drilled at Siple Dome during the 1994/95 field season will be sampled and analyzed. The objective of this work is to characterize the dust from these ice cores in order to identify, or at least constrain, the continental source areas of the dust, using a suite of chemical and isotopic tracers. These tracers include a combination of the fine-fraction clay mineralogy, strontium and neodymium isotope compositions and concentrations, and the rare-earth element patterns. By analyzing dust from multiple sites, an idea of the compositional variability throughout Antarctica can be determined.

该奖项旨在支持一项为期一年的试点研究，以研究已经存在的冰芯中的大气尘埃。 具体而言，将对伯德站的深冰芯和1994/95年野外季节在西普尔圆顶钻取的浅冰芯（160米）进行取样和分析。 这项工作的目的是表征这些冰芯的灰尘，以确定，或至少限制，大陆的灰尘来源地区，使用一套化学和同位素示踪剂。 这些示踪剂包括细粒级粘土矿物学、锶和钕同位素组成和浓度以及稀土元素模式的组合。 通过分析来自多个地点的尘埃，可以确定整个南极洲的成分变异性。