New insights into rapid climate events from Galapagos and Southern Ocean deep-sea corals

近几十年来，温室气体的空前增加强调了在快速变暖期间研究碳与气候之间联系的重要性。末次冰期终止（~18-10 ka）见证了大气pCO 2和温度的快速（十年）增加，从而提供了一个独特的机会来研究碳循环和全球气候之间的联系的时间尺度相关的现代。毫无疑问，海洋扮演着重要的角色，但一个主要的挑战仍然是找到合适的档案，记录深海的行为。深海珊瑚为这个问题提供了一个解决方案。与热带浅水区的造礁珊瑚不同，深海珊瑚没有藻类共生体，因此它们并不局限于浅水沃茨。该项目提供了利用柱珊瑚建立高分辨率深海气候记录的机会。柱珊瑚在全球海洋中广泛分布，它们的地球化学反映了它们的生长条件-然而它们以前没有被用于过去的研究-开辟了一个令人兴奋的新研究领域。目的是开发和利用深海柱珊瑚化石的骨骼，以提供对过去海洋过程的独特见解，重点是最后一次冰消过渡。博士学位将包括开发地球化学代理和放射性测年技术，根据全球气候和环境变化重建过去的海洋条件和解释。

The unprecedented rise in greenhouse gases over recent decades has emphasised the importance of examining the links between carbon and climate during intervals of rapid warming. The last glacial termination (~18-10 ka) witnessed rapid (decadal) increases in atmospheric pCO2 and temperature, thus presenting a unique opportunity to examine the links between the carbon cycle and global climate on timescales relevant to the modern day. The ocean doubtless plays an important role but a major challenge remains finding suitable archives that record how the deep sea behaves. Deep-sea corals offer a solution to this problem. Unlike reef-forming corals found in shallow tropical areas, deep-sea corals do not have algal symbionts so they are not restricted to shallow waters. This project offers the opportunity to establish high resolution deep-sea climate records from Stylasterid corals. Stylasterid corals are widespread in the global ocean, and their geochemistry reflects their growth conditions- however they have not been previously been used in studies of the past - opening up an exciting new field of research. The aim will be to develop and use the skeletons of fossil deep-sea Stylasterid corals to provide unique insights into the oceanic processes in the past with a focus on the last deglacial transition. The PhD will include development of geochemical proxies and radiometric dating techniques, reconstructions of past oceanographic conditions and interpretations in light of global climate and environmental change.