A stable-isotope mass spectrometer for novel determinations of past temperatures

用于以新颖方式测定过去温度的稳定同位素质谱仪

• 批准号: LE0883113
• 负责人: Em/Prof Allan Chivas
• 金额: $ 16.67万
• 依托单位: University of Wollongong
• 依托单位国家: 澳大利亚
• 项目类别: Linkage Infrastructure, Equipment and Facilities
• 财政年份: 2008
• 资助国家: 澳大利亚
• 起止时间: 2008-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LE0883113
• 关键词: stable; isotope; mass; spectrometer; novel

Much of the Australian landscape is subject to a dry and evaporative climate, making it very difficult to use conventional geochemical techniques to estimate past temperatures, even on short timescales of tens to hundreds of years. The application of a new isotopic technique to preserved carbonate minerals (soil carbonate, shells in rivers, lakes and the ocean) avoids the difficulty of this variable evaporation, and directly measures past temperatures. This will have a profound effect on our understanding of environmental changes on both short and long time scales, and permit a better understanding of the hydrological balances within the landscape.

澳大利亚的大部分地区都是干燥和蒸发性气候，因此很难使用传统的地球化学技术来估计过去的温度，即使是在几十到几百年的短时间尺度上。将新的同位素技术应用于保存的碳酸盐矿物（土壤碳酸盐，河流，湖泊和海洋中的贝壳）避免了这种可变蒸发的困难，并直接测量过去的温度。这将对我们理解短期和长期的环境变化产生深远的影响，并使我们能够更好地了解景观内的水文平衡。