Global Change: Cosmic Rays, Solar Activity, Geomagnetism, Cosmogenic Isotopes and Climate

全球变化：宇宙射线、太阳活动、地磁、宇宙成因同位素和气候

• 批准号: 9221218
• 负责人: Paul Damon
• 金额: $ 10.43万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-06-15 至 1997-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9221218&HistoricalAwards=false
• 关键词: Global; Change; Cosmic; Rays; Solar

This project represents a collaborative effort between the University of Arizona and the A.F. Ioffe Physical-Technical Institute in Russia. They have had a long history of interest in the use of cosmogenic isotopes from the natural archives to obtain information concerning solar-terrestrial interaction and astrophysical phenomena prior to instrumental observation and measurement. The focus is primarily on the cosmogenic isotopes 14C and 10Be that are produced in the Earth's atmosphere by cosmic rays. Cosmic rays convey information concerning astrophysical events such as supernova explosions and are also modulated by the Earth's dipole magnetic field and the magnetic fields associated with the solar wind that varies with other aspects of solar activity. the products are deposited in such natural archives as tree-rings, polar and montane ice, as well as lake and marine sediments. Both institutions have associated cosmogenic isotope laboratories and tree-ring research laboratories as well as access to vast regions containing the necessary natural archives. The cooperative research effort would enhance knowledge of the frequency of supernova explosions in the Earth's vicinity and provide information on past changes in the geomagnetic field and solar activity extending back several million years. This work has practical socioeconomic significance because, for example, solar activity is a factor in climate change. #

该项目代表了 亚利桑那大学和美国空军Ioffe物理技术 研究所在俄罗斯。 他们有着悠久的历史， 利用自然档案中的宇宙成因同位素， 关于日地相互作用的资料， 天体物理现象在仪器观测之前， 测量. 重点主要是宇宙成因同位素14C 和10 Be是由宇宙射线在地球大气中产生的。 宇宙射线传递有关天体物理事件的信息， 超新星爆发，也受到地球的 偶极磁场和与偶极磁场相关的磁场 太阳风随太阳活动的其他方面而变化。 的 产品存放在树木年轮等自然档案中， 极地和山地冰，以及湖泊和海洋沉积物。 两 各研究机构有相关的宇宙成因同位素实验室， 树木年轮研究实验室以及进入广阔地区 包含必要的自然档案。 合作研究工作将增进对 地球附近超新星爆炸的频率， 提供过去地磁场变化的信息， 数百万年前的太阳活动 这项工作 实际的社会经济意义，因为，例如，太阳能 活动是气候变化的一个因素。 #