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

拟议的工作将侧重于恢复北大西洋和北欧海域第四纪晚期的冰期-间冰期和百年至千年级的气候变异性。调查将以浮游有孔虫多样性为基础，重点放在以前没有广泛采用的替代方法上。这些活动包括：审议稀有物种以用于古环境解释；考虑到小型五孔虫(粒度为100微米)的相对丰富程度以揭示大西洋水团在除明显间冰期以外的其他时段平流的波动；对北欧海气候变异性进行研究；利用具有不同钙化深度的浮游有孔虫物种的稳定同位素特征解释间冰期气候变异性。

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.