230Th-normalised 232Th fluxes in sediment cores from the tropical Atlantic

In this dataset we have compiled 230Th-normalised 232Th flux data from previously published studies of tropical Atlantic sediment cores. The dataset covers the time period from the late Holocene to the last glacial maximum (~0-25 thousand years ago). The flux data are derived from measurements of 238U, 230Th and 232Th concentrations in sediment cores, mostly derived from ICPMS, with some alpha spectrometry. These data are used to infer past patterns and magnitudes of terrigenous inputs to the tropical Atlantic and how this relates to climate changes and processes.

本数据集整合了已发表的热带大西洋沉积岩芯研究中的经230Th标准化的232Th通量数据。数据集的时间跨度为全新世晚期至末次冰盛期（约0~25千年前）。该通量数据源自对沉积岩芯中铀-238（238U）、230Th及232Th浓度的测定，测定方法以电感耦合等离子体质谱法（ICPMS）为主，辅以少量α能谱法。此类数据可用于反演热带大西洋陆源输入的历史格局与规模，并探讨其与气候变化及气候过程的关联。