Nuclear Studies of Accumulating and Ablation Ice Using Cosmogenic 14C

使用宇宙 14C 积聚和消融冰的核研究

• 批准号: 9219931
• 负责人: Devendra Lal
• 金额: $ 20.08万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-02-15 至 1998-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9219931&HistoricalAwards=false
• 关键词: Nuclear; Studies; Accumulating; Ablation; Ice

This award is for support of a study of cosmogenic in-situ produced carbon-14 in polar ice. Carbon-14 produced in-situ has a signature which is distinct from the trapped atmospheric carbon-14, and can be used as a tracer for ice accumulation/ablation processes and rates. Work carried out under a previous grant established that an appreciable amount of in-situ carbon-14 is retained in firn, and therefore conventional carbon-14 compaction ages can be considerable underestimates since they do not consider the in-situ component. This study will examine samples from several ice cores from the Antarctic, including Vostok, the Dominion Range, McMurdo, South Pole, Allan Hills and the Adelie Coast.

该奖项旨在支持宇宙起源原位生产的研究 极地冰中的碳14 原位产生的碳-14具有 与捕获的大气碳-14不同的特征， 并且可以用作冰积累/消融过程的示踪剂 和利率。 利用以前设立的赠款开展的工作 大量的原位碳-14被保留在 因此，常规的碳-14压实年龄可以 由于他们没有考虑到现场的情况， 成分 这项研究将检查几个冰芯的样本 包括东方号、自治领山脉、麦克默多 南极，艾伦山和阿德利海岸。