Interpretation of GISP2 Electrical Conductivity Record

GISP2电导率记录解读

• 批准号: 9321343
• 负责人: Kendrick Taylor
• 金额: $ 22.68万
• 依托单位: Nevada System of Higher Education, Desert Research Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-08-15 至 1998-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9321343&HistoricalAwards=false
• 关键词: Interpretation; GISP2; Electrical; Conductivity; Record

The Greenland Ice Sheet Project 2 (GISP2) has recovered an ice core from central Greenland covering a time that extends at least 100,000 years before present. The high accumulation rate at the site makes it an ideal record for studying climate mechanisms and variability. The electrical conductivity, which is a function of the acid/base balance of the ice, has been measured continuously along the core and provides the highest time resolution of the many measurements which have been made on the core. The existing conductivity record will be interpreted in conjunction with other records. Specific goals are; 1) Investigation of decadal and century scale climate change, 2) Develop a chronology of volcanic activity record in the GISP2 core, 3) Improve the understanding of ice flow in the Summit region, 4) Improve the dating and accumulation record of the GISP2 core, and 5) Develop a chronology of northern hemisphere biomass burning as recorded by the GISP2 core. The GISP2 is a component of the NSF Arctic System Science Program.

格陵兰冰盖项目2(GISP2)从格陵兰中部回收了一个冰芯，覆盖的时间至少比现在早10万年。该地点的高累积速率使其成为研究气候机制和变异性的理想记录。电导率是冰的酸/碱平衡的函数，沿岩心连续测量，提供了在岩心上进行的许多测量中最高的时间分辨率。现有的电导率记录将与其他记录一起解释。具体目标是：1)调查十年和百年尺度的气候变化，2)编制GISP2岩芯火山活动记录的年表，3)提高对峰顶地区冰流的了解，4)改进GISP2岩心的年代测定和积累记录，5)编制GISP2岩心记录的北半球生物质燃烧年表。GISP2是美国国家科学基金会北极系统科学计划的组成部分。