de.pangaea.dataset944098 und de.pangaea.dataset954917 dataset PANGAEA

info@pangaea.de

https://www.pangaea.de/ information pointOfContact 2026-07-15T14:17:37Z https://doi.pangaea.de/10.1594/PANGAEA.944098 2026-02-28T00:03:13 publication https://doi.org/10.1594/PANGAEA.944098 Volz, Jessica B

jessica.volz@awi.de

https://orcid.org/0000-0002-7825-2174 information author Lange, Mirko

mirko.lange@awi.de

author Koehler, Dennis

dennis.koehler@awi.de

author Geibert, Walter

walter.geibert@awi.de

https://orcid.org/0000-0001-8646-2334 information author Stimac, Ingrid

Ingrid.Stimac@awi.de

https://orcid.org/0000-0001-6053-2330 information author Kasten, Sabine

sabine.kasten@awi.de

https://orcid.org/0000-0001-7453-5137 information author PANGAEA

info@pangaea.de

https://www.pangaea.de/ information publisher tableDigital This dataset comprises downcore measurements of pore-water nutrients, cations and DIC for sediment cores (MUC) 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. 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 continous 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 continous segmented flow analyzer (Seal Analytical) at the Marine Geochemistry Lab, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven. completed Volz, Jessica B

jessica.volz@awi.de

https://orcid.org/0000-0002-7825-2174 information principalInvestigator Anthropogenic disturbances Clarion Clipperton Fracture Zone deep sea mining deep sea sediment Geochemical data theme 1995-01-01 creation PANGAEA

info@pangaea.de

https://www.pangaea.de/ information pointOfContact JPIO-MiningImpact JPI Oceans - Ecological Aspects of Deep-Sea Mining AWI_MarGeoChem Marine Geochemistry @ AWI theme 1995-01-01 creation PANGAEA

info@pangaea.de

https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-4.0: Creative Commons Attribution 4.0 International textTable und geoscientificInformation -117.0119167 -117.0119167 11.86271667 11.86271667 2019-05-15T05:28:36 2019-05-15T05:28:36 0.0 0.16 Station label thematicClassification Area/locality thematicClassification Core thematicClassification DEPTH, sediment/rock physicalMeasurement m m Aluminium physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 µmol/l µmol/l Aluminium, error physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 ± ± Arsenic physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 µmol/l µmol/l Barium physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 µmol/l µmol/l Calcium physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 µmol/l µmol/l Calcium, error physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 ± ± Copper physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 µmol/l µmol/l Iron physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 µmol/l µmol/l Potassium physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 µmol/l µmol/l Potassium, error physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 ± ± Magnesium physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 µmol/l µmol/l Magnesium, error physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 ± ± Manganese physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 µmol/l µmol/l Phosphorus physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 µmol/l µmol/l Phosphorus, error physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 ± ± Silicon physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 µmol/l µmol/l Silicon, error physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 ± ± Strontium physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 µmol/l µmol/l Strontium, error physicalMeasurement ICP-AES, Thermo Scientific, iCAP 7400 ± ± Carbon, inorganic, dissolved physicalMeasurement SEAL Analytical, continuous flow analyser QuAAtro mmol/l mmol/l Carbon, inorganic, dissolved, error, relative physicalMeasurement SEAL Analytical, continuous flow analyser QuAAtro % % Nitrate physicalMeasurement SEAL Analytical, continuous flow analyser QuAAtro µmol/l µmol/l Nitrate, error, relative physicalMeasurement SEAL Analytical, continuous flow analyser QuAAtro % % Nitrite physicalMeasurement SEAL Analytical, continuous flow analyser QuAAtro µmol/l µmol/l Nitrite, error, relative physicalMeasurement SEAL Analytical, continuous flow analyser QuAAtro % % Ammonium physicalMeasurement SEAL Analytical, continuous flow analyser QuAAtro µmol/l µmol/l Ammonium, error, relative physicalMeasurement SEAL Analytical, continuous flow analyser QuAAtro % % Silicate physicalMeasurement SEAL Analytical, continuous flow analyser QuAAtro µmol/l µmol/l Silicate, error, relative physicalMeasurement SEAL Analytical, continuous flow analyser QuAAtro % % Phosphate physicalMeasurement SEAL Analytical, continuous flow analyser QuAAtro µmol/l µmol/l Phosphate, error, relative physicalMeasurement SEAL Analytical, continuous flow analyser QuAAtro % % text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.944098?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: SO268/2_198-1 (MUC-38) * LATITUDE: 11.862717 * LONGITUDE: -117.011917 * DATE/TIME: 2019-05-15T05:28:36 * ELEVATION: -4145.5 m * LOCATION: Clarion-Clipperton Fraction Zone, North East Pacific Ocean * CAMPAIGN: SO268/2 * BASIS: Sonne_2 * METHOD/DEVICE: Multicorer with television GER Dredge; Position USBL; TV-MUC 2019-05-15T05:28:36