Baseline radionuclide activities for sediment core SO268/1_56-1 (MUC-13) during RV SONNE cruise SO268/1 in the CCZ, Pacific Ocean

This baseline dataset comprises downcore measurements of the activity of different radionuclides for a sediment core (MUC) retrieved in the framework of the European collaborative JPI Oceans MiningImpact project onboard R/V SONNE cruise SO268 in 2019. The scientific work during cruise SO268 was part of the second phase of the MiningImpact project (Environmental impacts and risks of deep-sea mining) and is designed to assess the environmental impacts of deep-sea mining of polymetallic nodules in the Clarion-Clipperton Zone (CCZ) in the Pacific Ocean. After performing total acid digestions, the sediments were analyzed by isotope dilution using ICP-SF-MS (Element2, Thermo Scientific) for the determination of radionuclides at the Marine Geochemistry Lab, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven.

本基准数据集收录了2019年欧洲合作JPI Oceans MiningImpact项目在R/V SONNE船次SO268中采集的沉积岩心（MUC）中不同放射性核素的活动度测量数据。此次科学考察活动是MiningImpact项目第二阶段（深海采矿的环境影响与风险）的组成部分，旨在评估太平洋克拉里昂-克利珀顿区（CCZ）多金属结核深海采矿的环境影响。经过总酸消化处理后，沉积物在阿尔弗雷德·魏格纳研究所（Helmholtz极地与海洋研究中心，布伦塔诺港）海洋地球化学实验室，采用ICP-SF-MS（Element2，赛默飞世尔）进行同位素稀释分析，以测定放射性核素。

搜集汇总

背景与挑战

背景概述

该数据集提供了2019年RV SONNE巡航SO268/1期间在太平洋Clarion-Clipperton Zone采集的沉积物岩芯（MUC-13）的放射性核素活性基线测量，旨在评估深海采矿的环境影响。数据包含铀和钍同位素的活性值，通过ICP-SF-MS分析，覆盖深度0.0625至0.2250米，共203个数据点，用于支持深海生态和地球化学研究。