GISP2: Helium and Rare Gas Studies

GISP2：氦气和稀有气体研究

• 批准号: 9122991
• 负责人: Harmon Craig
• 金额: $ 15.87万
• 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: 1992
• 资助国家: 美国
• 起止时间: 1992-05-01 至 1997-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9122991&HistoricalAwards=false
• 关键词: GISP2; Helium; Rare; Gas; Studies

This award is for support of a two year project to measure the Helium concentrations and isotope ratios, Potassium/Argon ratios, and Krypton 81 ages in ice from the GISP2 core. The helium program is a search for nulls and/or reversals of the Earth's magnetic field, which should leave a strong signal in the Helium 3 to Helium 4 ratios and the Helium 3 concentrations in ice core Helium. If a geomagnetic Helium event is recorded in the ice sheets, it will provide a world-wide traceable horizon in both Greenland and Antarctica, for model studies of ice flow and for chronology. The Potassium/Argon measurements are to study gravitational fractionation of gases in the firn. The Krypton 81 dating will provide one of the first absolute ages on the GISP2 core.

该奖项是为了支持一个为期两年的项目，以衡量 氦浓度和同位素比，钾/氩比， 和氪81在GISP 2核心的冰中形成 氦 该计划是一个寻找零和/或地球的逆转 磁场，这应该会在氦中留下强烈的信号 冰芯中氦3/氦4比值和氦3浓度 氦气 如果在冰中记录到地磁氦事件 表，它将提供一个世界范围内可追溯的地平线， 格陵兰和南极洲，用于冰流模型研究， 年表 研究钾/氩测量 积雪中气体的重力分馏 氪81 测年将提供GISP 2的第一个绝对年龄 核心