Planktic foraminifers in the North Atlantic region: a revised approach to paleoclimatic reconstructions

建议的工作将侧重于重建晚第四纪北大西洋和北欧海的冰期-间冰期和百年至千年尺度的气候变率。调查将以浮游有孔虫多样性为基础，重点是以前未广泛采用的替代方法。这包括在古环境解释中考虑稀有物种；研究北欧海域的气候变率，考虑到小型quinqueloba的相对丰度（尺寸分数100µm），以便揭示大西洋水团平流在明显间冰期以外的时间间隔内的波动；利用不同钙化深度的浮游有孔虫物种的稳定同位素特征研究北大西洋地表水结构以解释间冰期内气候变率。

The proposed work will focus on reconstructing glacial-interglacial and centennial to milleannial-scale climate variability in the North Atlantic ocean and Nordic seas during the late Quaternary. Investigations will be based on planktic foraminiferal diversity with emphasis on alternative methods that were not broadly employed before. These include consideration of rare species for paleoenvironmental interpretations; a study of climate variability in the Nordic seas taking into account the relative abundance of small-sized T. quinqueloba (size-fraction 100µm) in order to unveil fluctuations in the advection of Atlantic water masses during intervals other than pronounced interglaciations; an investigation of the surface water structure in the North Atlantic using the stable isotope signature of planktic foraminiferal species having different calcification depth to interpret intra-interglacial climate variability.