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Bibliographic Details
Main Authors: Volz, Jessica B, Lange, Mirko, Koehler, Dennis, Geibert, Walter, Stimac, Ingrid, Kasten, Sabine
Format: Dataset Open Access
Language:en
Published: PANGAEA 2026
Subjects:
Aluminium; Aluminium, error; Ammonium; Ammonium, error, relative; Area/locality; Arsenic; AWI_MarGeoChem; Barium; Calcium; Calcium, error; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, error, relative; Clarion-Clipperton Fraction Zone, North East Pacific Ocean; Clarion Clipperton Fracture Zone; Copper; Core; deep sea mining; deep sea sediment; DEPTH, sediment/rock; Geochemical data; ICP-AES, Thermo Scientific, iCAP 7400; Iron; JPI Oceans - Ecological Aspects of Deep-Sea Mining; JPIO-MiningImpact; Magnesium; Magnesium, error; Manganese; Marine Geochemistry @ AWI; MUC; MUC-17; MultiCorer; Nitrate; Nitrate, error, relative; Nitrite; Nitrite, error, relative; Phosphate; Phosphate, error, relative; Phosphorus; Phosphorus, error; Potassium; Potassium, error; SEAL Analytical, continuous flow analyser QuAAtro; Silicate; Silicate, error, relative; Silicon; Silicon, error; SO268/1; SO268/1_74-1; Sonne_2; Station label; Strontium; Strontium, error; Sulfur; Sulfur, error
Online Access:https://doi.org/10.1594/PANGAEA.943927
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Table of Contents:
  • This baseline dataset comprises downcore measurements of pore-water nutrients, cations and DIC 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. The pore water was extracted onboard by rhizon sampling. Pore-water nutrient concentrations (nitrate, nitrite, ammonium, silicic acid, phosphate) were analyzed onboard on freshly extracted pore water upon 3-fold dilution or undiluted (ammonium) using a QuAAtro continuous segmented flow analyzer (Seal Analytical). Major and minor elements were determined on acidified samples (25 µL double sub-boiling distilled concentrated HCl per 1 mL sample) using ICP-AES (iCAP 7400, Thermo Scientific) and DIC was determined on HgCl2-treated pore-water samples using a QuAAtro continuous segmented flow analyzer (Seal Analytical) at the Marine Geochemistry Lab, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven.

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