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  • PANGAEA  (29)
  • Copernicus Publications (EGU)  (3)
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  • 1
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    Porewater geochemistry of sediment cores during METEOR cruise M141/1 (Azores) (2020)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Description: This data set contains major element compositions of pore waters from surface sediments (0–9 mbsf) of the Azores Plateau.
    Type: Dataset
    Format: application/zip, 9 datasets
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    DATA PANGAEA
  • 2
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    Porewater geochemistry of sediment cores during METEOR cruise M141/1, Terceira Rift, Azores (2019)
    PANGAEA
    In:  Supplement to: Schmidt, Christopher; Hensen, Christian; Wallmann, Klaus; Liebetrau, Volker; Tatzel, M; Schurr, S L; Kutterolf, Steffen; Haffert, Laura; Geilert, Sonja; Hübscher, Christian; Lebas, Elodie; Heuser, Alexander; Schmidt, Mark; Strauss, Harald; Vogl, Jochen; Hansteen, Thor H (2019): Origin of High Mg and SO4 Fluids in Sediments of the Terceira Rift, Azores‐Indications for Caminite Dissolution in a Waning Hydrothermal System. Geochemistry, Geophysics, Geosystems, 20(12), 6078-6094, https://doi.org/10.1029/2019GC008525
    Details
    Publication Date: 2023-01-13
    Description: During R/V Meteor cruise 141/1, pore fluids of near surface sediments were investigated to find indications for hydrothermal activity in the Terceira Rift (TR), a hyper‐slow spreading center in the Central North Atlantic Ocean. To date, submarine hydrothermal fluid venting in the TR has only been reported for the D. João de Castro seamount, which presently seems to be inactive. Pore fluids sampled close to a volcanic cone at 2800 m water depth show an anomalous composition with Mg, SO4, and total alkalinity (TA) concentrations significantly higher than seawater and a nearby reference core. The most straightforward way of interpreting these deviations is the dissolution of the hydrothermally formed mineral caminite (MgSO4 0.25Mg(OH)2 0.2H2O). This interpretation is corroborated by a thorough investigation of fluid isotope systems (δ26Mg, δ30Si, δ34S, δ44/42Ca, and 87Sr/86Sr). Caminite is known from mineral assemblages with anhydrite, and forms in hydrothermal recharge zones only under specific conditions such as high fluid temperatures and in altered oceanic crust, which are conditions generally met at the TR. We hypothesize that caminite was formed during hydrothermal activity and is now dissolving during the waning state of the hydrothermal system, so that caminite mineralization is shifted out of its stability zone. Ongoing fluid circulation through the basement is transporting the geochemical signal via slow advection towards the seafloor.
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 3
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    Seasonality in pH and temperature for shallow zones of the Bering Sea from measurements of coral Clathromorphum nereostratum (2015)
    PANGAEA
    In:  Supplement to: Fietzke, Jan; Ragazzola, Federica; Halfar, Jochen; Dietze, Heiner; Foster, Laura C; Hansteen, Thor H; Eisenhauer, Anton; Steneck, Robert S (2015): Century-scale trends and seasonality in pH and temperature for shallow zones of the Bering Sea. Proceedings of the National Academy of Sciences, 201419216, https://doi.org/10.1073/pnas.1419216112
    Details
    Publication Date: 2023-02-24
    Description: Increasing atmospheric CO2 concentrations are potentially affecting marine ecosystems twofold, by warming and acidification. The rising amount of CO2 taken up by the ocean lowers the saturation state of calcium carbonate, complicating the formation of this key biomineral used by many marine organisms to build hard parts like skeletons or shells. Reliable time-series data of seawater pH are needed to evaluate the ongoing change and compare long-term trends and natural variability. For the high-latitude ocean, the region facing the strongest CO2 uptake, such time-series data are so far entirely lacking. Our study provides, to our knowledge, the first reconstruction of seasonal cycle and long-term trend in pH for a high-latitude ocean obtained from 2D images of stable boron isotopes from a coralline alga.
    Keywords: Aleutian Islands Alaska; Attu_Island; BIOACID; Biological Impacts of Ocean Acidification; DIVER; Sampling by diver
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 4
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    (Table 2) Chemical composition of zeolites from ODP Hole 157-953C (2002)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 157-953C; Aluminium oxide; Calcium oxide; Calculated; Canarias Sea; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Electron microprobe (EMP); Iron oxide, Fe2O3; Joides Resolution; Leg157; Magnesium oxide; Manganese oxide; Minerals; Ocean Drilling Program; ODP; Phosphorus pentoxide; Potassium oxide; Sample code/label; Silicon dioxide; Sodium oxide; Titanium dioxide; Water in rock
    Type: Dataset
    Format: text/tab-separated-values, 259 data points
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  • 5
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    Raw multibeam EM122 data: transits of METEOR cruise M141/1 (Tropical Atlantic) (2017)
    PANGAEA
    Details
    Publication Date: 2024-02-27
    Keywords: AtlantOS; Bathymetry; CT; DATE/TIME; File format; File name; File size; LATITUDE; LONGITUDE; M141/1; M141/1-track; Meteor (1986); Optimizing and Enhancing the Integrated Atlantic Ocean Observing System; Swath-mapping system Simrad EM122 (Kongsberg Maritime AS); Underway cruise track measurements; Uniform resource locator/link to raw data file
    Type: Dataset
    Format: text/tab-separated-values, 4176 data points
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  • 6
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    (Fig. 2) Distribution of the secondary minerals within altered volcaniclastic sediments from ODP Hole 157-953C (2002)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 157-953C; Analcite; Canarias Sea; Chlorite; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Gmelinite; Gobbinsite; Heulandite; Joides Resolution; Leg157; Merlinoite; Montmorillonite; Natrolite; Ocean Drilling Program; ODP; Paulingite; Phillipsite; Sample code/label; Saponite; Sericite; Smectite; X-ray diffraction (XRD)
    Type: Dataset
    Format: text/tab-separated-values, 156 data points
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  • 7
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    (Table 3,4) Trace element concentrations of altered glasses and the secondary phases from ODP Hole 157-953C (2002)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 157-953C; Barium; Barium, maximum; Barium, minimum; Barium, standard deviation; Calculated average/mean values; Canarias Sea; Cerium; Cerium, maximum; Cerium, minimum; Cerium, standard deviation; Copper; Copper, maximum; Copper, minimum; Copper, standard deviation; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Dysprosium; Dysprosium, maximum; Dysprosium, minimum; Dysprosium, standard deviation; Gadolinium; Gadolinium, maximum; Gadolinium, minimum; Gadolinium, standard deviation; Gallium; Gallium, maximum; Gallium, minimum; Gallium, standard deviation; Joides Resolution; Lanthanum; Lanthanum, maximum; Lanthanum, minimum; Lanthanum, standard deviation; Leg157; Manganese; Manganese, maximum; Manganese, minimum; Manganese dioxide, standard deviation; Minerals; Neodymium; Neodymium, maximum; Neodymium, minimum; Neodymium, standard deviation; Nickel; Nickel, maximum; Nickel, minimum; Nickel, standard deviation; Niobium; Niobium, maximum; Niobium, minimum; Niobium, standard deviation; Number of observations; Ocean Drilling Program; ODP; Praseodymium; Praseodymium, maximum; Praseodymium, minimum; Praseodymium, standard deviation; Rubidium; Rubidium, maximum; Rubidium, minimumimum; Rubidium, standard deviation; Samarium; Samarium, maximum; Samarium, minimumimum; Samarium, standard deviation; Sample code/label; Strontium; Strontium, maximum; Strontium, minimumimum; Strontium, standard deviation; Synchrotron X-ray fluorescence SYXRF; Tin; Tin, maximum; Tin, minimum; Tin, standard deviation; Titanium; Titanium, maximum; Titanium, minimum; Titanium, standard deviation; Vanadium; Vanadium, maximum; Vanadium, minimum; Vanadium, standard deviation; Yttrium; Yttrium, maximum; Yttrium, minimum; Yttrium, standard deviation; Zinc; Zinc, maximum; Zinc, minimum; Zinc, standard deviation; Zirconium; Zirconium, maximum; Zirconium, minimum; Zirconium, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 1506 data points
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  • 8
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    (Table 1) Major element composition of altered glass shards from ODP Hole 157-953C (2002)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 157-953C; Aluminium oxide; Aluminium oxide, standard deviation; Calcium oxide; Calcium oxide, standard deviation; Canarias Sea; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Electron microprobe (EMP); Iron oxide, Fe2O3; Iron oxide, Fe2O3, standard deviation; Joides Resolution; Leg157; Magnesium oxide; Magnesium oxide, standard deviation; Manganese oxide; Manganese oxide, standard deviation; Number of observations; Ocean Drilling Program; ODP; Phosphorus pentoxide; Phosphorus pentoxide, standard deviation; Potassium oxide; Potassium oxide, standard deviation; Sample code/label; Silicon dioxide; Silicon dioxide, standard deviation; Sodium oxide; Sodium oxide, standard deviation; Titanium dioxide; Titanium dioxide, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 506 data points
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  • 9
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    Continuous thermosalinograph oceanography along RV METEOR cruise M175 (2022)
    PANGAEA
    Details
    Publication Date: 2024-01-26
    Description: Underway temperature and salinity data was collected along the cruise track with two autonomous thermosalinograph (TSG) systems, each consisting of a SBE21 TSG together with a SBE38 Thermometer. Both systems worked independent from each other throughout the cruise. While temperature is taken at the water inlet in about 2.5 m depth, salinity is estimated within the interior TSG from conductivity and interior temperature.
    Keywords: Calculated from internal temperature and conductivity; Conductivity; DAM_Underway; DAM Underway Research Data; DATE/TIME; DEPTH, water; Digital oceanographic thermometer, Sea-Bird, SBE 38; GPF 20-3_90; LATITUDE; LONGITUDE; M175; M175_0_Underway-3; Measurement container; Meteor (1986); Quality flag, salinity; Quality flag, water temperature; Salinity; Seadatanet flag: Data quality control procedures according to SeaDataNet (2010); Temperature, water; Temperature, water, internal; Thermosalinograph; Thermosalinograph (TSG), Sea-Bird, SBE 21 SEACAT; TSG
    Type: Dataset
    Format: text/tab-separated-values, 158426 data points
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  • 10
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    ADCP current measurements (38 kHz) during RV METEOR cruise M175 (2022)
    PANGAEA
    Details
    Publication Date: 2024-01-26
    Description: Upper-ocean velocities along the cruise track of RV METEOR cruise M175 were continuously collected by a vessel-mounted Teledyne RD Instruments 38 kHz Ocean Surveyor ADCP. The transducer was located at 5.0 m below the water line. The instrument was operated in narrowband mode with 32 m bins and a blanking distance of 16.0 m, while 55 bins were recorded using a pulse of 2.89 s. The ship's velocity was calculated from position fixes obtained by the Global Positioning System (GPS). Heading, pitch and roll data from the ship's gyro platforms and the navigation data were used by the data acquisition software VmDas internally to convert ADCP velocities into earth coordinates. Accuracy of the ADCP velocities mainly depends on the quality of the position fixes and the ship's heading data. Further errors stem from a misalignment of the transducer with the ship's centerline. Data post-processing included water track calibration of the misalignment angle (-0.27° +/- 0.4616°) and scale factor (1.0019 +/- 0.0088) of the Ocean Surveyor signal. The average interval was set to 120 s.
    Keywords: Calculated; Current velocity, east-west; Current velocity, north-south; DAM_Underway; DAM Underway Research Data; DATE/TIME; DEPTH, water; Echo intensity, relative; GPF 20-3_90; LATITUDE; LONGITUDE; M175; M175_0_Underway-5; Meteor (1986); Pings, averaged to a double ensemble value; Quality flag, current velocity; Vessel mounted Acoustic Doppler Current Profiler [38 kHz]; VMADCP-38
    Type: Dataset
    Format: text/tab-separated-values, 1741730 data points
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