FTIRS-based opal data of IODP Site U1537

This data is complementing the dataset from Weber et al. 2022.We used Fourier Transform Infrared Spectroscopy (FTIRS) to quantify biogenic opal to obtain information on past changes in ocean productivity. FTIRS has first been implemented successfully to reconstruct paleoproductivity changes in neighboring Sites MD07-3133 and MD07-3134 for which FTIRS derived opal has been compared against opal measured by means of 'conventional' leaching techniques (Sprenk et al., 2013). At Site U1537, 287 samples have been measured for the past 0.4 Ma and published along with details on the method in (Weber et al., 2022). Here, we added an additional 48 samples to increase the sample resolution.

本数据集为Weber等人2022年发布的数据集的补充数据。我们采用傅里叶变换红外光谱法（Fourier Transform Infrared Spectroscopy, FTIRS）对生物成因蛋白石进行定量分析，以获取过去海洋生产力变化的相关信息。FTIRS此前已成功应用于邻近站位MD07-3133与MD07-3134的古生产力变化重建，且该方法得到的蛋白石含量已与通过‘传统’浸析技术测得的蛋白石数据完成比对验证（Sprenk等，2013）。在U1537站位，我们已对过去0.4 Ma的287个样品开展检测，相关方法细节已随检测结果发表于Weber等人2022年的研究中。本次研究新增48个样品，以提升样品分辨率。