SGER: The Deuterium-Hydrogen Ratio in Alkenones as a Proxy for the Paleo-hydrological Cycle

Herbert 0545525该项目是为开发作为地表水同位素组成替代指标的氚/氢同位素比值所做的初步工作。由藻类产生的烯酮将被用作D/H比的来源，来自实验室培养和现有的热带岩心。实验室培养将确定盐度、温度和养分可获得性等其他环境因素是否以及在多大程度上影响D/H。实验室结果将使用来自热带岩心的自然样本进行验证。目前的分析技术也将得到发展和改进。希望这项工作将取得足够的成功，从而产生一项关于进一步发展D/H作为古海洋学指标的使用的全面提案。

AbstractHerbert 0545525This project is preliminary work towards the development of deuterium/hydrogen isotopic ratios as a proxy for isotopic composition of surface water. Alkenones produced by algae will be used as a source for the D/H ratios, both from laboratory cultures and available tropical cores. Laboratory cultures will determine whether and to what degree other environmental factors such as salinity, temperature, and nutrient availability affect D/H. The laboratory results will be verified using natural samples from the tropical cores. The current analytical technique will also be developed and improved. It is hoped that this work will be successful enough to lead to a full proposal to further develop the use of D/H as a paleoceanographic proxy.