Radionuclide activities for sediment core SO268/2_193-1_PUC-18 at a disturbed site after a small-scale dredge experiment during RV SONNE cruise SO268/2 in the CCZ, Pacific Ocean

• Main Authors: Volz, Jessica B, Lange, Mirko, Koehler, Dennis, Geibert, Walter, Stimac, Ingrid, Kasten, Sabine
• Format: Dataset
• Language: English
• Published: PANGAEA
• Subjects: Anthropogenic disturbances; Area/locality; AWI_MarGeoChem; Clarion-Clipperton Fraction Zone; North East Pacific Ocean; Clarion Clipperton Fracture Zone; Core; deep sea mining; deep sea sediment; DEPTH; sediment/rock; Geochemical data; ICP-SF-MS; Thermo Scientific; Element 2; JPI Oceans - Ecological Aspects of Deep-Sea Mining; JPIO-MiningImpact; Marine Geochemistry @ AWI; PUC; Push corer; Salt-corrected; SO268/2; SO268/2_193-1_PUC-18; Sonne_2; Station label; Thorium-230; error; supported; Thorium-230 excess; Thorium-232; Uranium-234; Uranium-235; Uranium-238; Pacific; Alfred Wegener Institute
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.944148

This dataset comprises downcore measurements of the activity of different radionuclides for a sediment core (ROV-operated PUC) retrieved from disturbed sites after a small-scale dredge experiment 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.