Electrical Conductivity Measurements on the GISP 2 Core

GISP 2 核心上的电导率测量

• 批准号: 8922046
• 负责人: Kendrick Taylor
• 金额: $ 42.94万
• 依托单位: Nevada System of Higher Education, Desert Research Institute
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-03-15 至 1994-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8922046&HistoricalAwards=false
• 关键词: Electrical; Conductivity; Measurements; GISP; Core

This award is in support of the second Greenland Ice Sheet Project (GISP 2). The objective of this project is to assist in the climatic interpretation of the GISP 2 core by measuring its electrical conductivity as a function of depth. This will allow a time-depth relationship to be developed for the core, and permit sampling by other investigators to be more efficient because of advance knowledge of the core's gross chemistry. In addition, the existence of long- term climatic trends and oscillation will be investigated. Results from the first year of the GISP 2 program show that a vertical resolution of 3 mm is possible; this will permit resolution of annual layers to an age of approximately 30,000 B.P. In ice older than 30,000 years, annual resolution will be lost but longer term events will be detectable. Preliminary results from the 1989 GISP 2 field season demonstrate the effectiveness of the method. The results of this proposal, combined with the other aspects of the GISP 2 program, will enhance our understanding of the earth's paleoclimate and ongoing climatic processes.

该奖项是为了支持第二个格陵兰冰盖项目（GISP 2）。该项目的目的是通过测量其电导率作为深度的函数来协助对GISP 2核心的气候解释。这将有助于建立岩心的时间-深度关系，并使其他研究人员能够更有效地采样，因为他们对岩心的总体化学成分有了更深入的了解。此外，还将研究长期气候趋势和振荡的存在。GISP 2项目第一年的结果表明，垂直分辨率达到3毫米是可能的；这将使年度层的分辨率达到大约30,000 bp的年龄。对于年龄超过30,000年的冰，年度分辨率将丧失，但长期事件将被检测到。1989年GISP 2野外季节的初步结果证明了该方法的有效性。这一建议的结果，结合GISP 2计划的其他方面，将增强我们对地球古气候和正在进行的气候过程的理解。