Nuclear Studies of Accumulating and Ablation Ice Using Cosmogenic 14C

这一奖项是为了支持极地冰中宇宙成因的原位产生的碳-14的研究。现场产生的碳14具有不同于捕获的大气中的碳14的特征，可用作冰积累/消融过程和速率的示踪剂。根据以前的赠款开展的工作确定，相当数量的原位碳-14保留在FREN中，因此，传统的碳-14压实年龄可能被大大低估，因为它们没有考虑原位成分。这项研究将检查来自南极的几个冰芯的样本，包括沃斯托克冰芯、多米尼恩冰芯、麦克默多冰芯、南极冰芯、艾伦山冰芯和阿德利海岸冰芯。

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.