Methane, Helium and Trace Gases in the Greenland and Antarctic Ice Sheets

格陵兰岛和南极冰盖中的甲烷、氦气和微量气体

• 批准号: 8722718
• 负责人: Harmon Craig
• 金额: $ 18.79万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-07-01 至 1991-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8722718&HistoricalAwards=false
• 关键词: Methane; Helium; Trace; Gases; Greenland

This award supports research on gases and isotopes in polar ice cores and other samples of Antarctic ice. During the past year work has been completed on the carbon isotopic composition and the concentration of methane in Greenland ice cores, in ice samples back to 350 years before the present. This investigation will focus on (1) the study of the 80 samples (1400 kg of ice) collected in Antarctica, (2) continuation of methane analyses on ice cores with the new low-blank system, and (3) sampling and extraction of ice for continued development of the Krypton 81 method for age measurements of old ice (back to 1,000,000 years).

该奖项支持对极地冰中气体和同位素的研究 冰芯和其他南极冰的样本 在过去一年中 关于碳同位素组成的工作已经完成， 格陵兰冰芯中的甲烷浓度， 追溯到350年前的今天 这次调查将 重点（1）研究了80个样品（1400公斤冰块） 在南极洲收集的，（2）继续甲烷分析 冰芯与新的低空白系统，和（3）采样， 为氪81的继续发展提取冰 古冰的年龄测量方法（追溯到100万年）。