GLOW Tropical temperature history during Palaeogene global warming events

GLOW 古近纪全球变暖事件期间的热带温度历史

• 批准号: NE/F523293/1
• 负责人: Paul Pearson
• 金额: $ 8.52万
• 依托单位: CARDIFF UNIVERSITY
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2007
• 资助国家: 英国
• 起止时间: 2007 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FF523293%2F1
• 关键词: GLOW; Tropical; temperature; history; during

The Cenozoic represents a period during which the Earth¿s climate system switched from a warm, greenhouse to a cold, icehouse world. Several rapid global warming events occurred during the in general already warm Paleogene (e.g., Zachos, Kroon et al., 2004; Lourens et al., 2005). Central in this proposal is better understanding of processes that underlie such switches of the climate system at long- and short timescales. Specifically, we aim to document the response of the West Indian Ocean system to these kind of global climate changes, e.g. the biogeochemical state of the western Indian Ocean, the variability of the sea surface temperatures and evolution of biota. These Paleogene intervals of extreme warmth are of significant societal interest; resolving temperature and climate feedbacks will provide valuable insights into possible future climate patterns and biogeochemical state of the ocean. Here, we propose to extend the onshore Tanzanian drilling transect (Nicholas et al., in press) to offshore to complete this transect from shallow environments to the deep sea. We aim to perform a site survey offshore Tanzania to obtain a grid of seismic lines which can subsequently be used in an IODP drilling proposal and/or IMAGES proposal to optimize choice of multiple borehole locations and/or giant piston cores along a depth transect. The seismic profiles, combined with drilling on a subsequent IODP leg, give us the opportunity to draw together existing but disparate fragments of onshore evidence and integrate them with new offshore data to build a comprehensive tectonic, stratigraphic and sedimentological framework for the geological evolution of the southern Tanzanian continental margin from the Permian to Recent.

新生代代表了地球气候系统从温暖，温室转变为寒冷的冰屋世界的时期。一般来说，发生了几起快速的全球变暖事件（例如，Zachos，Kroon等，2004； Lourens等，2005）。该提案中的中心是更好地理解在长时间和短时间内气候系统此类转换的过程。具体而言，我们旨在记录西印度洋系统对这类全球气候变化的反应，例如西印度洋的生物地球化学状态，海面温度的变化和生物群的进化。这些极端温暖的古纪间隔具有重大的社会利益。解决温度和气候反馈将为可能的未来气候模式和海洋生物地球化学状态提供宝贵的见解。在这里，我们建议将陆上的坦桑尼亚钻孔样带（Nicholas等，印刷中）扩展到近海，以完成从浅层环境到深海的横断面。我们旨在进行坦桑尼亚海上现场调查，以获得地震线的网格，随后可以在IODP钻井建议和/或图像提案中使用，以优化沿深度区域的多个钻孔位置和/或巨型活塞芯的选择。地震概况，再加上随后的IODP腿上的钻探，使我们有机会将现有但不同的陆上证据片段融合在一起，并将它们与新的海上数据集成在一起，以建立一个全面的构造，地层和沉积学框架，从而为坦桑尼亚南部持续范围的地理学进化从最近的许可中到最近。

项目成果

Temperature controls carbon cycling and biological evolution in the ocean twilight zone

• DOI: 10.1126/science.abb6643
• 发表时间: 2021-03-12
• 期刊: SCIENCE
• 影响因子: 56.9
• 作者: Boscolo-Galazzo, Flavia;Crichton, Katherine A.;Pearson, Paul N.
• 通讯作者: Pearson, Paul N.

Planktonic foraminifera stable isotopes and water column structure: Disentangling ecological signals

• DOI: 10.1016/j.marmicro.2013.02.002
• 发表时间: 2013-05-01
• 期刊: MARINE MICROPALEONTOLOGY
• 影响因子: 1.9
• 作者: Birch, Heather;Coxall, Helen K.;O'Regan, Matthew
• 通讯作者: O'Regan, Matthew