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.

本数据集汇编了已发表的热带大西洋沉积岩芯相关研究中的经230钍（230Th）归一化的232钍（232Th）通量数据。数据集涵盖的时间跨度为全新世晚期至末次冰盛期（约0~2.5万年前）。该通量数据源自沉积岩芯中铀238（238U）、230钍（230Th）及232钍（232Th）浓度的测量结果，其中绝大多数测量采用电感耦合等离子体质谱法（ICP-MS），少量采用α能谱法（α spectrometry）。上述数据被用于反演热带大西洋过去的陆源输入模式与量级，并探讨其与气候变化及气候过程的关联。