cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.904133
title: Eastern Tropical Indian Ocean individual foraminiferal analyses (IFA) of Globigerinoides ruber isotopes from the Late Holocene and LGM

description: This dataset presents measurements of individual foraminiferal analyses (IFA) of stable oxygen and carbon isotopes in tests of planktic foraminifera Globigerinoides ruber, obtained from a series of four eastern tropical Indian Ocean sediment cores. The IFA dataset focuses on two time periods: the Late Holocene (0-2 ka) and the Last Glacial Maximum (19-21 ka).
description: LH - Late Holocene (0-2 ka); LGM - Last Glacial Maximum (19-21 ka).
description: Supplement to: Thirumalai, Kaustubh; DiNezio, Pedro N; Tierney, Jessica E; Puy, Martin; Mohtadi, Mahyar (2019): An El Niño mode in the glacialIndian Ocean? Paleoceanography and Paleoclimatology, 34(8), 1316-1327
DOI: 10.1594/pangaea.904009
title: Physical oceanography (CTD) during METEOR cruise M135

description: PO-GLOBAL-SVN = 591 used on 22-Mar-2019 12:06:18Matlab = 9.4.0.813654 (R2018a)Release = 2nc_uncertainty_p = 2.000000nc_uncertainty_t = 0.002000nc_uncertainty_s = 0.002000nc_uncertainty_o = 1.000000Fluorescence and Turbidity data still contain deck offsets. Use with caution
DOI: 10.1594/pangaea.904013
title: Physical oceanography (CTD) during METEOR cruise M136

description: PO-GLOBAL-SVN = 615 used on 13-Jun-2019 11:23:57Matlab = 9.4.0.813654 (R2018a)Release = 6nc_uncertainty_p = 2.000000nc_uncertainty_t = 0.002000nc_uncertainty_s = 0.002000nc_uncertainty_o = 1.500000 Fluorescence and Turbidity data still contain deck offsets. Use with caution
DOI: 10.1594/pangaea.904016
title: Physical oceanography raw data from a RBR concerto CTD deployed in front of Zachariæ Isstrøm during POLARSTERN cruise PS109 (September 2017)
DOI: 10.1594/pangaea.904578
title: Porosity data for sediment cores taken in small-scale disturbance tracks and undisturbed reference sites during SONNE cruise SO239 in the Clarion-Clipperton Zone (CCZ)

description: This dataset comprises porosity data from undisturbed reference sites sampled by a multiple corer (MUC) and disturbed push-cores (PUC), which were retrieved using the ROV Kiel 6000 (GEOMAR) during RV SONNE expedition SO239 in 2015. During this cruise, different European contract areas for the exploration of polymetallic nodules in the area of the Clarion-Clipperton Zone (CCZ) were visited (BGR, IOM, GSR, IFREMER), which are currently being explored in light of potential future deep-sea mining. The PUCs were taken in several small-scale disturbance tracks, which were created 1 day to 37 years before sampling for the simulation of deep-sea mining activities in the different exploration areas. The sampled disturbance tracks include 1-day- and 3-year-old EBS tracks (created with an Epibenthic sledge), 8-months- and 37-year-old dredge tracks, and a 20-year-old track from the Benthic Impact Experiment in the IOM area (IOM-BIE).The dataset was produces in the laboratories of the Alfred Wegener Institute (AWI) Bremerhaven, Germany.
description: Supplement to: Volz, Jessica B; Haffert, Laura; Haeckel, Matthias; Koschinsky, Andrea; Kasten, Sabine (2020): Impact of small-scale disturbances on geochemical conditions, biogeochemical processes and element fluxes in surface sediments of the eastern Clarion-Clipperton Zone, Pacific Ocean. Biogeosciences, 17(4), 1113-1131
DOI: 10.1594/pangaea.904580
title: Bulk solid-phase contents of Mn, Fe, Al for sediment cores taken during SONNE cruise SO239 in the Clarion-Clipperton Zone (CCZ)

description: This dataset comprises solid-phase bulk sediment manganese, iron and aluminum contents from sediment cores, which were retrieved by a multiple corer (MUC) during RV SONNE expedition SO239 in 2015. During this cruise, different European contract areas for the exploration of polymetallic nodules in the area of the Clarion-Clipperton Zone (CCZ) were visited (BGR, IOM, GSR, IFREMER), which are currently being explored in light of potential future deep-sea mining. Furthermore, one of the protected Areas of Particular Environmental Interest (APEI), more precisely the APEI3 north of the CCZ, was visited.The dataset was produced in the laboratories of the Alfred Wegener Institute (AWI) Bremerhaven, Germany.
description: Supplement to: Volz, Jessica B; Liu, Bo; Köster, Male; Henkel, Susann; Koschinsky, Andrea; Kasten, Sabine (2020): Post-depositional manganese mobilization during the last glacial period in sediments of the eastern Clarion-Clipperton Zone, Pacific Ocean. Earth and Planetary Science Letters, 532, 116012
DOI: 10.1594/pangaea.904581
title: Leached contents of different Manganese and Iron mineral phases for sediment cores taken during SONNE cruise SO239 in the Clarion-Clipperton Zone (CCZ)

description: This dataset comprises leached contents of different manganese and iron mineral phases from sediment cores, which were retrieved by a multiple corer (MUC) during RV SONNE expedition SO239 in 2015. During this cruise, different European contract areas for the exploration of polymetallic nodules in the area of the Clarion-Clipperton Zone (CCZ) were visited (BGR, IOM, GSR, IFREMER), which are currently being explored in light of potential future deep-sea mining. Furthermore, one of the protected Areas of Particular Environmental Interest (APEI), more precisely the APEI3 north of the CCZ, was visited.For the extraction of various manganese and iron minerals, the extraction schemes after Koschinsky et al. (2001) and Poulton and Canfield (2005) were combined. The leached mineral phases comprise (1) carbonate-associated Mn and Fe (Mncarb; Fecarb), (2) easily reducible/mobilizable Mn- and Fe(oxyhydr)oxides (Mnmobil; Femobil), (3) easily reducible Fe oxides, such as ferrihydrite and lepidocrocite (Feox1) and associated Mn oxides (Mnox1), (4) reducible Fe oxides, such as goethite and hematite (Feox2) and associated Mn oxides (Mnox2) and (5) magnetite (Femag) and associated Mn oxides (Mnmag). The dataset was produced in the laboratories of the Alfred Wegener Institute (AWI) Bremerhaven, Germany.
description: Supplement to: Volz, Jessica B; Liu, Bo; Köster, Male; Henkel, Susann; Koschinsky, Andrea; Kasten, Sabine (2020): Post-depositional manganese mobilization during the last glacial period in sediments of the eastern Clarion-Clipperton Zone, Pacific Ocean. Earth and Planetary Science Letters, 532, 116012
DOI: 10.1594/pangaea.904558
title: Mg/Ca on individual and pooled foraminifera of surface sediment samples
DOI: 10.1594/pangaea.905170
title: Isoprene concentrations in the surface Arctic waters during POLARSTERN cruise PS92 (ARK-XXIX/1 TRANSSIZ) in May 2015

description: Isoprene concentrations in the surface Arctic waters, measured during the TRANSSIZ cruise from May 20th to May 27th, 2015, on board the R/V Polarstern. Measurements were made on-line with water extracted from the "ship's membrane pump" (~6m under the surface).
DOI: 10.1594/pangaea.904560
title: Solid-phase TOC and bulk Mn data for sediment cores taken in small-scale disturbance tracks during SONNE cruise SO239 in the Clarion-Clipperton Zone (CCZ)

description: This dataset comprises solid-phase total organic carbon contents (TOC) and bulk sediment manganese contents from disturbed push-cores (PUC), which were retrieved using the ROV Kiel 6000 (GEOMAR) during RV SONNE expedition SO239 in 2015. During this cruise, different European contract areas for the exploration of polymetallic nodules in the area of the Clarion-Clipperton Zone (CCZ) were visited (BGR, IOM, GSR, IFREMER), which are currently being explored in light of potential future deep-sea mining. The PUCs were taken in several small-scale disturbance tracks, which were created 1 day to 37 years before sampling for the simulation of deep-sea mining activities in the different exploration areas. The sampled disturbance tracks include 1-day- and 3-year-old EBS tracks (created with an Epibenthic sledge), 8-months- and 37-year-old dredge tracks, and a 20-year-old track from the Benthic Impact Experiment in the IOM area (IOM-BIE).The dataset was produces in the laboratories of the Alfred Wegener Institute (AWI) Bremerhaven, Germany.
description: Supplement to: Volz, Jessica B; Haffert, Laura; Haeckel, Matthias; Koschinsky, Andrea; Kasten, Sabine (2020): Impact of small-scale disturbances on geochemical conditions, biogeochemical processes and element fluxes in surface sediments of the eastern Clarion-Clipperton Zone, Pacific Ocean. Biogeosciences, 17(4), 1113-1131
DOI: 10.1594/pangaea.905363
title: Sea surface temperature calculations from sediment core MD08-3180
DOI: 10.1594/pangaea.905365
title: Foraminifer composition of sediment core MD08-3180
DOI: 10.1594/pangaea.904257
title: Grain size analysis of turbidite sediment cores GeoB2703-5, GeoB6812-1, GeoB13823-2, and GeoB13861-1
DOI: 10.1594/pangaea.904258
title: X-ray diffraction analysis of turbidite sediment cores GeoB2703-5, GeoB6812-1, GeoB13823-2, and GeoB13861-1
DOI: 10.1594/pangaea.904281
title: ADCP current measurements (38 and 75 kHz) during METEOR cruise M137
DOI: 10.1594/pangaea.904305
title: Mineral quantification of sediment cores GeoB2703-5, GeoB6812-1, GeoB13861-1, and GeoB13823-2

description: Results are weight % if not stated differently values smaller than 1 wt.% can only be seen as traces of the mineral.
DOI: 10.1594/pangaea.904316
title: (Appendix B) Long-chain alkyl diol, GDGT and XRF data from marine surface sediments off shore the Amazon River estuary

description: * Values are taken from Sun et al. 2017, Biogeosciences.For the GeoB samples we only utlized the measurements for the top one centimeter, while Sun et al. 2017 used the average of the upper two centimeters, which leads to a small discrepancy of reported values.
DOI: 10.1594/pangaea.904317
title: (Appendix C) Long chain alkyl diol data of sediment core GeoB16224-1
DOI: 10.1594/pangaea.904318
title: (Appendix C) Branched and isoprenoid tetraether index (BIT) of sediment core GeoB16224-1

description: *Data between 92 and 268 cm is derived from Crivellari et al. 2018, Quarternary Science Reviews.
DOI: 10.1594/pangaea.904319
title: (Appendix C) CaFe index of sediment core GeoB16224-1

description: Data between 82 and 600 cm is derived from Zhang et al. 2017, Quarternary Science Reviews.Minor discrepancies to the values from Zhang et al. 2017 (QSR) exist due to the probabilistic nature of the EDP-XRF calibration.
DOI: 10.1594/pangaea.904357
title: Thermoluminescence and optically stimulated luminescence sensitivity, and IRSL/OSL measurements for core GeoB16206-1, collected off Parnaíba River mouth, northeastern Brazil

description: Marine sediment cores offer a great number of proxies for reconstructions of past environmental conditions, such as ocean temperature, salinity, primary productivity, stratification of the upper water column and continental precipitation. Up to date, continental precipitation archived in marine sediment cores is reconstructed based mainly on the hydrogen isotopic composition of plant-wax compounds (i.e., n-alkane δD) or on the ratio between terrigenous and marine sediments expressed as elemental ratios (e.g., ln(Fe/Ca)). Although these proxies provide reliable precipitation reconstructions, there are some inherent limitations, as plant-wax δD application depends on the availability of n-alkanes in marine sediments and elemental ratios can be influenced by other factors like the relative sea-level, primary productivity and post-depositional processes. Here we introduce new precipitation proxies based on optically stimulated luminescence and thermoluminescence signals of quartz and feldspar. The rationale is that when precipitation changes over the catchment through time, different sediment sources regarding weathering intensity and parent rock types are drained, supplying sediments with varying signals of luminescence to the ocean. We compared our new proxy records with records of well-established proxies, for the same (ln(Fe/Ca)) and neighboring (n-alkane δD) marine sediment cores. The comparison among all proxies as well as with a state-of-art transient climate model run (TraCE-21ka) demonstrates that the new proxies accurately constrain precipitation changes over northeastern Brazil for the last 30,000 years. The main advantage of these new proxies relies on its fast response to precipitation changes over the continent. Furthermore, they are straightforward to measure and not expensive.
description: Supplement to: Mendes, Vinícius Ribau; Sawakuchi, André Oliveira; Chiessi, Cristiano Mazur; Giannini, Paulo César Fonseca; Rhefeld, Kira; Mulitza, Stefan (2019): Thermoluminescence and opticallystimulated luminescence measured inmarine sediments indicate precipitationchanges over northeastern Brazil. Paleoceanography and Paleoclimatology, 34(8), 1476-1486
DOI: 10.1594/pangaea.905555
title: Continuous thermosalinograph oceanography along POLARSTERN cruise track PS116
DOI: 10.1594/pangaea.905562
title: Continuous thermosalinograph oceanography along POLARSTERN cruise track PS117
DOI: 10.1594/pangaea.905270
title: Concentration of Neogloboquadrina pachyderma from plankton tows during cruises NEWP-92, NEWP-93, ARK-IV/3, ARK-X/1, ARK-X/2, ARK-XI/2, M36/3, MSM09/2, ARK-XXVI/1

description: Density profiles of the planktonic foraminifera species Neogloboquadrina pachyderma from stratified plankton tow hauls collected in the Arctic and the North Atlantic oceans during the cruises NEWP92, NEWP93, ARK IV/3, ARK-X/1, ARK-X/2, ARK-XI/2, M36/3, MSM09/2, ARKXXVI/1.
description: Supplement to: Greco, Mattia; Jonkers, Lukas; Kretschmer, Kerstin; Bijma, Jelle; Kucera, Michal (2019): Depth habitat of the planktonic foraminifera Neogloboquadrina pachyderma in the northern high latitudes explained by sea-ice and chlorophyll concentrations. Biogeosciences, 16, 3425–3437
DOI: 10.1594/pangaea.905502
title: Phytoplankton pigment concentrations measured by HPLC during POLARSTERN cruise PS99.1

description: We present data set on the concentrations of various phytoplankton pigments (unit: mg/m³) from discrete samples measured using High Pressure Liquid Chromatography (HPLC) during the cruises PS99.1 on R/V POLARSTERN in the Fram Strait.
DOI: 10.1594/pangaea.905734
title: Continuous thermosalinograph oceanography along POLARSTERN cruise track PS120
DOI: 10.1594/pangaea.908067
title: Fraction of particulate thorium 234 in total thorium 234 in the water column at stations PS94/081-9, PS94/117-7 and PS94/125-8
DOI: 10.1594/pangaea.908074
title: Reflectance measurements (Ocean Optics STS-VIS) of bare ice and melt ponds on Arctic sea ice acquired during POLARSTERN cruise PS106/1

description: This dataset contains reflectance measurements of ponds and ice surfaces acquired during RV POLARSTERN cruise PS106 with two Ocean Optics STS-VIS spectrometers.The Ocean Optics setup has been built and designed at German Aerospace Center (DLR) Oberpfaffenhofen by Thomas Schwarzmaier, Stefan Plattner and Peter Gege and consists of one upward-looking sensor equipped with a cosine collector and one downward-looking sensor equipped with a 1 degree fore optic.Measurements were referenced with a spectralon panel. The data from the upward-looking spectrometer was used to correct for illumination changes.The bare ice data has been acquired under diffuse illumination conditions. The melt pond data has been acquired under clear sky conditions.Each folder contains three subfolders:1) photos: field photographs of each target taken with a downward-looking action cam attached to the spectrometers.2) raw: raw measurements of dark current, reference (spectralon panel) and target (bare ice surfaces) for both spectrometers.3) reflectance: reflectance data computed from the raw measurements (associated raw files are documented in each reflectance file). The .RE files contain information on irradiance change, the .RL files contain the reflectance spectra that were not corrected for irradiance change and the .R files contain the reflectance spectra that were corrected for irradiance change.
DOI: 10.15468/dl.42zvtn
title: Occurrence Download

description: A dataset containing 2301 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Carex muricata subsp. muricata)",
 "HasCoordinate is true"
 ]
}

 The dataset includes 2301 records from 104 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0094297-240506114902167/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.907964
title: Absolute concentrations of BDGTs and PDGTs in sediments from expeditions M84/1 and POS450

description: Butanetriol and pentanetriol dialkyl glycerol tetraethers (BDGTs and PDGTs) are membrane lipids recently discovered in sedimentary environments and in the methanogenic archaeon Methanomassiliicoccus luminyensis. They possess an unusual structure, which challenges fundamental assumptions in lipid biochemistry. Indeed, they bear a butanetriol or a pentanetriol backbone instead of a glycerol at one end of their core structure. In this study, we unambiguously located the additional methyl group of the BDGT compound on the C3 carbon of the lipid backbone via high-field two-dimensional NMR experiments. We further systematically explored the abundance, distribution and isotopic composition of BDGTs and PDGTs as both intact polar and core lipid forms in marine sediments collected in contrasting environments of the Mediterranean Sea and Black Sea. In addition, relatively 13C-depleted BDGTs from the Rhone delta and from the Black Sea are in agreement with a probable methanogenic source for these lipids. In line with this interpretation, high proportions of intact polar BDGTs and PDGTs were detected in the deeper methane-laden sedimentary layers. However, relatively 13C enriched BDGTs and contrasting headgroup distribution patterns of BDGTs and PDGTs in sediments of the Eastern Mediterranean Sea imply that additional archaeal groups also produce these unique lipids.
description: Empty cells in the data table corresponds to measurements which were below detection limit.
description: Supplement to: Coffinet, Sarah; Meador, Travis B; Mühlena, Lukas; Becker, Kevin W; Schröder, Jan Martin; Zhu, Qing-Zeng; Lipp, Julius S; Heuer, Verena B; Crump, Matthew P; Hinrichs, Kai-Uwe (2019): Structural elucidation and environmental distributions of butanetriol and pentanetriol dialkyl glycerol tetraethers (BDGTs and PDGTs). Biogeosciences, 17, 317-330
DOI: 10.1594/pangaea.908065
title: Dissolved thorium 230 and particulate thorium 232 in the water column at stations PS94/125-2 and PS94/125-5
DOI: 10.1594/pangaea.908066
title: Dissolved thorium 230 and particulate thorium 232 in the water column at stations PS70/309-5 and PS70/400-2
DOI: 10.1594/pangaea.908599
title: CTD raw data files from POLARSTERN cruise PS113, link to tar-archive
DOI: 10.1594/pangaea.908702
title: Dissolved organic carbon and total dissolved nitrogen in sediment porewater and overlying bottom water collected during Maria S. Merian cruise MSM29 and Polarstern cruise PS85 to the Fram Strait

description: This data shows concentrations of dissolved organic carbon and total dissolved nitrogen measured in overlying bottom water and sediment porewaters via catalytic oxidation at high temperature with a TOC-VCPH Shimadzu instrument (Stubbins and Dittmar, 2012; doi:10.4319/lom.2012.10.347).
DOI: 10.1594/pangaea.908707
title: (Table S1) General information of solid phase extracted dissolved organic matter from porewater and overlying bottom water collected during Maria S. Merian cruise MSM29 and Polarstern cruise PS85 to the Fram Strait

description: Molecular analysis of dissolved organic matter in overlying bottom water and porewater was performed on a Solarix FT-ICR-MS equipped with a 15 Tesla superconducting magnet (Bruker Daltonic) using an electrospray ionization source (Bruker Apollo II) in negative ion mode. Molecular formula calculation for all samples was performed using a Matlab (2010) routine that searches, with an error of &lt; 0.5 ppm, for all potential combinations of elements including the elements C∞, O∞, H∞, N ≤ 4; S ≤ 2 and P ≤ 1. Combination of elements NSP, N2S, N3S, N4S, N2P, N3P, N4P, NS2, N2S2, N3S2, N4S2, S2P was not allowed. Mass peak intensities are normalized relative to the total molecular formulas in each sample according to previously published rules (Rossel et al., 2015; doi:10.1016/j.marchem.2015.07.002). Additionally, the contribution of molecular formulas with different elemental composition (carbon = C; hydrogen = H; oxygen = O; nitrogen = N; sulfur = S; phosphorus = P) is expressed as a percentage of the total intensity in each sample. Furthermore, in this table,Molecular weight~wa~ was calculated considering the intensity of the mass peak in each sample (i.e. wa stands for intensity weighted-average).
DOI: 10.1594/pangaea.908125
title: Abundance of macrozoobenthos in surface sediments sampled during POLARSTERN cruise PS82 (ANT-XXIX/9)
DOI: 10.1594/pangaea.908127
title: Abundance of macrozoobenthos in surface sediments sampled during POLARSTERN cruise PS96 (ANT-XXXI/2)
DOI: 10.1594/pangaea.908130
title: Prokaryotic cell abundance and biomass measured during Maria S. Merian cruise MSM29 and Polarstern cruise PS85 to the Fram Strait

description: Prokaryotic cell abundances and biomass were determined in deep-sea sediment samples collected at the deep-sea LTER HAUSGARTEN, located in the Fram Strait. Sampling was performed during two cruises, i.e. RV Maria S. Merian MSM 29 in summer 2013 (23 June-12 July) and RV Polarstern PS85 in summer 2014 (6 June-3 July). Undisturbed sediment cores were collected with a TV-guided multicorer. Prokaryotic cell abundances were determined using acridine orange direct counts, following the procedure described in (Hoffmann et al., 2017; doi:10.3389/fmicb.2017.00266). For each sample two replicate filters were counted. Cell volumes were determined using a stage micrometer and converted to biomass using a conversion factor of 3 x 10^-13 g C /µm³ (Børsheim, K. Y., Bratbak, G., and Heldal, M. (1990). Enumeration and biomass estimation of planktonic bacteria and viruses by transmission electron microscopy. Applied and Environmental Microbiology 56, 352-356).
DOI: 10.1594/pangaea.908132
title: Radiocarbon dating of sediment core GeoB1515-1
DOI: 10.5281/zenodo.11532141
title: Au-Ce-C-O - Model and Dataset
title: Dynamic Phase Transitions Dictate the Size Effect and Activity of Supported Gold Catalysts

description: This dataset supports our publication Dynamic Phase Transitions Dictate the Size Effect and Activity of Supported Gold Catalysts. It includes the Au-Ce-C-O model, a machine learning force field (MLFF) developed for simulating supported gold catalysts on Ceria surface in CO and O2 atmosphere, along with the data and files used in the training and simulation processes.



Freezed and compressed Au-Ce-C-O model (graph.pb and graph-compress.pb): The fully trained MLFF model used for production simulations in our study.

Au-Ce-C-O dataset (dataset.tgz): Contains the training datasets for Au/CeO2 system with CO and O2 , in DeePMD-kit format (dataset.tgz). Each image is labeled with coordinations (coord.npy) in Å, total energies (energy.npy) in eV, force (force.npy) in eV/Å, and cell parameters (box.npy) in Å.

DeePMD-kit files (input-auceco.json): Input file example utilized for training using DeePMD-kit.

LAMMPS files (in.rigid): Input file example utilized for NVT Molecular dynamics simulation.

VASP files (VASP-au10ceo2-3co-aimd.tgz): Input file example utilized for AIMD simulation.

DPMD trajectaries (traj.tgz): The full trajectories of the Au/CeO2 system, with and without CO exposure, with temperature increasing in increments of 25 K.