Last Interglacial Southern Ocean paleothermometry from diatom morphometrics: Analysis and application of the F. kerguelensis Valve Rectangularity Sea Surface Temperature proxy.

This dataset contains physical measurements of specimens of the Southern Ocean diatom Fragilariopsis kerguelensis. We used the image segmentation software SHERPA (Kloster et al., 2017) to make physical measurements of each valve including \"rectangularity\". F. kerguelensis rectangularity has been posited to change in response to Sea Surface Temperature, a relationship that we explore in this study by calculating SSTs using established and new valve rectangularity/SST calibrations.本数据集收录南大洋硅藻凯尔盖朗舟形藻（Fragilariopsis kerguelensis）标本的物理测量数据。本研究采用图像分割软件SHERPA（Kloster等，2017）对每枚壳瓣开展物理测量，涵盖矩形度（rectangularity）指标。此前已有研究提出，凯尔盖朗舟形藻的矩形度会随海表温度（Sea Surface Temperature, SST）发生变化；本研究通过运用已确立及全新的壳瓣矩形度-海表温度校准方法计算海表温度，以此探究二者间的关联。