North Atlantic Foraminifers and Climate: Expedition 395

北大西洋有孔虫和气候：第 395 次探险

• 批准号: NE/Y001745/1
• 负责人: Bridget Wade
• 金额: $ 4.3万
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FY001745%2F1
• 关键词: North; Atlantic; Foraminifers; Climate; Expedition

This research will contribute to an expedition of the International Ocean Discovery Program to the mid-Atlantic Reykjanes Ridge south of Iceland which will take a series of sediment cores up to about 1 km into the sea bed. Foraminifers are small sub-millimetric organisms that occur in the ocean plankton and secrete microscopic shells that build up in vast numbers in sea floor sediment. The foraminifera will be studied in this project to establish what species are present in the sediment cores and determine the age of the sediment layers. Variations in the type of foraminifers will be used to establish the history of climate variation in the North Atlantic and the contribution of various cold and warm deep sea currents that flow in the area.Detailed studies will also determine the evolutionary history of several of the modern plankton groups which are currently not well known and in particular establish whether their origin was related to climatic change.

这项研究将为冰岛南部的中大西洋雷克雅内斯山脊的国际海洋发现计划进行探险，该计划将使一系列的沉积物核心达到海床约1公里。有孔虫是出现在海洋浮游生物中的小巨量生物，并分泌微观的贝壳，它们在海底沉积物中大量堆积。该项目将研究有孔虫，以确定沉积物岩心中存在哪些物种并确定沉积物层的年龄。将使用有孔虫类型的变化来确定北大西洋地区气候变化的历史以及该地区流动的各种冷热深海电流的贡献。进行详细研究还将确定几个现代浮游生物群的进化历史，这些浮游生物的进化历史目前尚不清楚，尤其是与他们的起源有关。