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.

本数据集汇编了来自已发表热带大西洋沉积物岩芯研究的、经230钍（230Th）归一化的232钍（232Th）通量数据。该数据集的时间覆盖范围为全新世晚期至末次冰盛期（约0至25千年前）。此类通量数据源自沉积物岩芯中铀-238（238U）、钍-230（230Th）与钍-232（232Th）的浓度测定，其中多数数据通过电感耦合等离子体质谱法（ICP-MS）获取，剩余少量采用α能谱法完成分析。上述数据可用于反演热带大西洋过往的陆源输入模式与通量规模，并阐明其与气候变化及相关过程的内在关联。