Annual diatom abundance and diversity from the Jurassic ice core, Antarctic Peninsula (1873-2012 CE)

This dataset provides information on the annual abundance and diversity of diatoms preserved in ice layers from a Jurassic ice core that was drilled in 2012 from the Southern Antarctic Peninsula. The diatom record spans the entire depth of the ice core (0-140 meters) and represents the interval from 1873 to 2012 CE. Meltwater from the annual layers of the ice core was filtered, and the filters were analyzed using a scanning electron microscope for the identification and classification of diatoms. This dataset was utilized to reconstruct past changes in the westerly winds of the Southern Hemisphere, with the results presented in Tetzner et al. (2025).

Funding:
This research was funded by CONICYT-Becas Chile and Cambridge Trust funding programme for PhD studies under grant number 72180432.

本数据集提供了2012年于南极半岛南部钻取的侏罗纪冰芯（ice core）冰层中保存的硅藻（diatoms）年度丰度与多样性相关信息。该硅藻记录覆盖冰芯全深度（0~140米），对应公元1873年至2012年的时段。研究人员对冰芯年度冰层的融水进行过滤处理，随后利用扫描电子显微镜（scanning electron microscope）对滤膜开展分析，以完成硅藻的鉴定与分类。本数据集被用于重建南半球西风带的历史变化，相关研究成果发表于Tetzner等人（2025）的研究中。

资助说明：
本研究由CONICYT-Becas Chile与剑桥信托博士研究资助计划（资助编号：72180432）资助。