Planktonic foraminiferal census counts and counts of Ice Rafted Debris (IRD) from sediment samples collected during Ocean Drilling Programme (OPD) leg 162 site 983 (NERC grant NE/L006405/1)

These data are described fully in the following publication: S. Barker, J. Chen, X. Gong, L. Jonkers, G. Knorr, D. Thornalley, Icebergs not the trigger for North Atlantic cold events. Nature 520, 333-336 (2015). The dataset comprises planktonic foraminiferal census counts and counts of Ice Rafted Debris (IRD) from sediment samples collected during Ocean Drilling Programme (OPD) leg 162 site 983 in the Northeast Atlantic (60.48°N, 23.68°W, 1,984m water depth). The data were collected between Jan 2011 and Dec 2014. The dataset includes values every 2cm from 2 to 51.5m (metres composite depth) along the ship-board splice. Before counts were performed bulk sediments were spun overnight in distilled water, before sieving over a 63µm sieve. All portions were dried, weighed and stored. Counts were performed on a split of the >150µm fraction. The dataset can be employed to assess changes in surface temperature and presence of rafted ice over the site over the past 440kyr or so. This information is of interest to paleoceanographers and paleoclimatologists. The dataset was created and interpreted by a team at Cardiff University, with additional input from other authors named in the publication. The dataset is complete except for one or two samples that were not received from the repository.

本数据集的详细信息详见于以下出版物：S. Barker, J. Chen, X. Gong, L. Jonkers, G. Knorr, D. Thornalley, 冰川并非北大西洋冷事件之触发因素. 《自然》杂志第520期，第333-336页（2015年）。该数据集包括在北大西洋东北部（60.48°N, 23.68°W, 水深1,984米）的海洋钻探计划（OPD）第162航次第983站位采集的浮游有孔虫计数和冰筏碎片（IRD）计数。数据收集时间介于2011年1月至2014年12月。数据集涵盖了从2米至51.5米（以米为单位的复合深度）沿船载接缝每2厘米的值。在计数之前，所有沉积物样本均在蒸馏水中过夜旋转，随后通过63µm的筛子筛选。所有部分均进行干燥、称重并储存。计数是在>150µm部分中进行的。该数据集可用于评估过去约440千年的该区域表面温度变化和漂冰的存在。此信息对古海洋学家和古气候学家具有重要意义。该数据集由卡迪夫大学的研究团队创建和解读，并得到出版物中列出的其他作者的额外贡献。除了从存储库未收到的一两个样本外，数据集完整无缺。