Absolute Paleotemperatures

pi将研究活的钙质海洋植物和动物组织的氢同位素组成，以及它们的氧和碳同位素组成。前提是脂类的氢组成非常接近地反映了水的氢同位素组成，因此应该得到密切相关的氧同位素组成的信息。这项研究希望找到一个适合化石材料的系统——最终目标是利用氢同位素来估算过去的古温度，就像氧同位素一样。拨款进行为期一年的海洋钙质藻类和脂类的可行性研究，以确定这些生物的氢同位素组成与海水的关系。

The PIs will study of hydrogen isotopic composition of the tissueof living calcareous marine plants and animals, along with their oxygen and carbon isotopic composition. The premise is that the hydrogen composition of lipids very closely mirrors the hydrogen isotopic composition of water, and therefore should yield information about oxygen isotopic composition, which are closely related. The study hopes to arrive at a system suitable for fossil material - the ultimate objective being the use of hydrogen isotopes in paleotemperature estimates of the past, muchlike oxygen isotopes. Funds are provided for a one year feasibility study on marine calcareous algae and lipids to determine whether the relationship between hydrogen isotopic composition of these organisms and seawater.