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  • 1
    Online Resource
    Online Resource
    Ocean circulation and shelf processes in the Arctic Mediterranean traced by radiogenic neodymium isotopes, rare earth elements and stable oxygen isotopes (2017)
    Kiel
    Details Availability
    Keywords: Hochschulschrift ; Nordpolarmeer ; Meeresströmung
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource
    URL: http://nbn-resolving.de/urn:nbn:de:gbv:8-diss-204798
    URL: http://d-nb.info/1128149257/34
    URL: http://macau.uni-kiel.de/receive/dissertation_diss_00020479
    URN: urn:nbn:de:gbv:8-diss-204798
    DDC: 550
    Language: English
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  • 2
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    Rare earth elements measured on water bottle samples at BATS (2017)
    PANGAEA
    Details
    Publication Date: 2023-03-10
    Keywords: BATS15m; Cerium, dissolved; CTD/Rosette; CTD-RO; DEPTH, water; Dysprosium, dissolved; Erbium, dissolved; Europium, dissolved; Gadolinium, dissolved; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; Holmium, dissolved; Lanthanum, dissolved; Lutetium, dissolved; Neodymium, dissolved; Praseodymium, dissolved; Samarium, dissolved; South Atlantic Ocean; Terbium, dissolved; Thulium, dissolved; Ytterbium, dissolved; Yttrium, dissolved
    Type: Dataset
    Format: text/tab-separated-values, 225 data points
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  • 3
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    Rare earth elements measured on water bottle samples at BATS (2017)
    PANGAEA
    Details
    Publication Date: 2023-03-10
    Keywords: BATS2000m; Cerium, dissolved; CTD/Rosette; CTD-RO; DEPTH, water; Dysprosium, dissolved; Erbium, dissolved; Europium, dissolved; Gadolinium, dissolved; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; Holmium, dissolved; Lanthanum, dissolved; Lutetium, dissolved; Neodymium, dissolved; Praseodymium, dissolved; Samarium, dissolved; South Atlantic Ocean; Terbium, dissolved; Thulium, dissolved; Ytterbium, dissolved; Yttrium, dissolved
    Type: Dataset
    Format: text/tab-separated-values, 195 data points
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    DATA PANGAEA
  • 4
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    Neodymium isotopes and rare earth elements measured on water bottle samples during cruise TDXXI and TDXXII (2017)
    PANGAEA
    Details
    Publication Date: 2023-02-24
    Keywords: Classification; Conductivity; CTD/Rosette; CTD-RO; Density, sigma500; Density, sigma-theta (0); DEPTH, water; Elevation of event; Event label; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; Laptev Sea; Latitude of event; Longitude of event; Neodymium, dissolved; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, standard deviation; Pressure, water; Salinity; Sample ID; TDXXI-19; TDXXII-17; Temperature, water; Temperature, water, potential; ε-Neodymium; ε-Neodymium, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 25 data points
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  • 5
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    Analysis of Nd isotope, REE and oxygen isotope ratios on water samples across Fram Strait (2017)
    PANGAEA
    In:  Supplement to: Laukert, Georgi; Frank, Martin; Bauch, Dorothea; Hathorne, Ed C; Rabe, Benjamin; von Appen, Wilken-Jon; Wegner, Carolyn; Zieringer, Moritz; Kassens, Heidemarie (2017): Ocean circulation and freshwater pathways in the Arctic Mediterranean based on a combined Nd isotope, REE and oxygen isotope section across Fram Strait. Geochimica et Cosmochimica Acta, 202, 285-309, https://doi.org/10.1016/j.gca.2016.12.028
    Details
    Publication Date: 2023-04-03
    Description: The water masses passing the Fram Strait are mainly responsible for the exchange of heat and freshwater between the Nordic Seas and the Arctic Ocean (the Arctic Mediterranean, AM). Disentangling their exact sources, distribution and mixing, however, is complex. This work provides new insights based on a detailed geochemical tracer inventory including dissolved Nd isotope (e-Nd), rare earth element (REE) and stable oxygen isotope (d18O) data along a full water depth section across Fram Strait. We find that Nd isotope and REE distributions in the open AM primarily reflect lateral advection of water masses and their mixing. Seawater-particle interactions exert important control only above the shelf regions, as observed above the NE Greenland Shelf. Advection of northward flowing warm Atlantic Water (AW) is clearly reflected by an e-Nd signature of -11.7 and a Nd concentration ([Nd]) of 16 pmol/kg in the upper ~500 m of the eastern and central Fram Strait. Freshening and cooling of the AW on its way trough the AM are accompanied by a continuous change towards more radiogenic e-Nd signatures (e.g. -10.4 of dense Arctic Atlantic Water). This mainly reflects mixing with intermediate waters but also admixture of dense Kara Sea waters and Pacific-derived waters. The more radiogenic e-Nd signatures of the intermediate and deep waters (reaching -9.5) are mainly acquired in the SW Nordic Seas through exchange with basaltic formations of Iceland and CE Greenland. Inputs of Nd from Svalbard are not observed and surface waters and Nd on the Svalbard shelf originate from the Barents Sea. Shallow southward flowing Arctic-derived waters (〈200 m) form the core of the East Greenland Current above the Greenland slope and can be traced by their relatively radiogenic e-Nd (reaching -8.8) and elevated [Nd] (21-29 pmol/kg). These properties are used together with d18O and standard hydrographic tracers to define the proportions of Pacific-derived (〈~30% based on Nd isotopes) and Atlantic-derived waters, as well as of river waters (〈~8%). Shallow waters (〈150 m) on the NE Greenland Shelf share some characteristics of Arctic-derived waters, but exhibit less radiogenic epsilon-Nd values (reaching -12.4) and higher [Nd] (up to 38 pmol/kg) in the upper ~100 m. This suggests local addition of Greenland freshwater of up to ~6%. In addition to these observations, this study shows that the pronounced gradients in epsilon-Nd signatures and REE characteristics in the upper water column provide a reliable basis for assessments of shallow hydrological changes within the AM.
    Keywords: GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes
    Type: Dataset
    Format: application/zip, 4 datasets
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    DATA PANGAEA
  • 6
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    Dissolved neodymium and hafnium isotope data of surface water samples during RV Meteor cruise M147 (2023)
    PANGAEA
    Details
    Publication Date: 2023-08-18
    Description: The dataset contains the isotope compositions of dissolved Nd and Hf in surface waters. Nd and Hf isotopes were measured by Neptune Plus MC-ICP-MS. External reproducibility was monitored by internal laboratory standard solutions NIST 3135a and CGHF1, and USGS reference material NOD-A-1.
    Keywords: Amazon estuary; CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Dissolved neodymium and hafnium isotope; Event label; Fraction; GEOTRACES; Hafnium, dissolved; Hafnium-176/Hafnium-177; Latitude of event; Longitude of event; M147; M147_100.5; M147_100-1; M147_103-1; M147_11.5; M147_12.5; M147_13.5; M147_15.5; M147_2.5; M147_25.5; M147_26-1; M147_27-1; M147_28-1; M147_29-1; M147_3.5; M147_30-1; M147_31-1; M147_32-1; M147_33-1; M147_34-1; M147_4.5; M147_5.5; M147_55.5; M147_56.5; M147_6.5; M147_64-1; M147_66-1; M147_69-1; M147_7.5; M147_70-1; M147_71-1; M147_72-1; M147_74-1; M147_75-1; M147_78-1; M147_79-1; M147_8.5; M147_80-1; M147_82.5; M147_83-1; M147_86-1; M147_87-1; M147_90-1; M147_91.5; M147_91-1; M147_94-1; M147_95.5; M147_97-1; M147_99.5; Meteor (1986); Neodymium, dissolved; Neodymium-143/Neodymium-144 ratio; Rare earth elements and yttrium; Salinity; Scan fish; SCF; Station label; Temperature, water; Transect; ε-Hafnium; ε-Hafnium, standard deviation; ε-Neodymium; ε-Neodymium, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 779 data points
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  • 7
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    Dissolved neodymium and hafnium isotope data of surface water samples during RV METEOR cruise M147 (2023)
    PANGAEA
    Details
    Publication Date: 2023-08-18
    Description: The dataset contains the isotope compositions of dissolved Nd and Hf together with those of particulate Nd, and the concentrations of rare earth elements and yttrium (REY) and Hf ([Hf]) in surface waters along the entire salinity gradient of the Amazon estuary, including the Pará River. Samples were obtained in April–May 2018 during RV Meteor cruise M147, which was official process study Gapr11 of the international GEOTRACES program.
    Keywords: Amazon estuary; Dissolved neodymium and hafnium isotope; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; Rare earth elements and yttrium
    Type: Dataset
    Format: application/zip, 4 datasets
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    DATA PANGAEA
  • 8
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    Neodymium isotope compositions of Fe–Mn oxyhydroxide and residual suspended particulate matter from surface water samples during RV METEOR cruise M147 (2023)
    PANGAEA
    Details
    Publication Date: 2023-08-18
    Description: The dataset contains the Nd isotope compositions of Fe–Mn oxyhydroxides and residual suspended particulate matter. Nd isotopes were measured by Neptune Plus MC-ICP-MS. External reproducibility was monitored by internal laboratory standard solutions NIST 3135a and USGS reference materials (NOD-A-1, AGV-2 and BHVO-2).
    Keywords: Amazon estuary; CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Dissolved neodymium and hafnium isotope; Event label; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; Latitude of event; Longitude of event; M147; M147_27-1; M147_28-1; M147_29-1; M147_30-1; M147_31-1; M147_8-1; Meteor (1986); Neodymium-143/Neodymium-144 ratio; Origin; Rare earth elements and yttrium; Salinity; Station label; Temperature, water; ε-Neodymium; ε-Neodymium, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 91 data points
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    DATA PANGAEA
  • 9
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    Amazon River, Pará River and seawater fractions of surface water samples during RV METEOR cruise M147 (2023)
    PANGAEA
    Details
    Publication Date: 2023-08-18
    Description: The dataset contains the fractions of Pará River water, Amazon River water and Atlantic seawater in the Amazon estuary, calculated based on a three-endmember mixing of Nd or Hf isotopes and Nd or Hf concentrations.
    Keywords: Amazon estuary; CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Dissolved neodymium and hafnium isotope; Endmember proportion; Event label; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; Latitude of event; Longitude of event; M147; M147_100.5; M147_100-1; M147_103-1; M147_11.5; M147_12.5; M147_13.5; M147_15.5; M147_2.5; M147_25.5; M147_26-1; M147_27-1; M147_28-1; M147_29-1; M147_3.5; M147_30-1; M147_31-1; M147_32-1; M147_33-1; M147_34-1; M147_4.5; M147_5.5; M147_55.5; M147_56.5; M147_6.5; M147_64-1; M147_66-1; M147_69-1; M147_7.5; M147_70-1; M147_71-1; M147_72-1; M147_74-1; M147_75-1; M147_78-1; M147_79-1; M147_8.5; M147_80-1; M147_82.5; M147_83-1; M147_86-1; M147_87-1; M147_90-1; M147_91.5; M147_91-1; M147_94-1; M147_95.5; M147_97-1; M147_99.5; Meteor (1986); Rare earth elements and yttrium; Salinity; Scan fish; SCF; Station label; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 573 data points
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    DATA PANGAEA
  • 10
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    Neodymium isotopes and rare earth elements measured on water bottle samples during POLARSTERN cruise ARK-XXVII/1 (2017)
    PANGAEA
    Details
    Publication Date: 2023-12-01
    Keywords: ARK-XXVII/1; Attenuation, optical beam transmission; Calculated; Calculated, PAAS-normalized (McLennan, 2001); Cerium, dissolved; Cerium anomaly; Classification; Conductivity; CTD/Rosette; CTD-RO; Date/Time of event; Density, sigma1500; Density, sigma2500; Density, sigma500; Density, sigma-theta (0); DEPTH, water; Dysprosium, dissolved; Elevation of event; Erbium, dissolved; Europium, dissolved; Event label; Fluorometer; Gadolinium, dissolved; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; Heavy rare-earth elements/light rare-earth elements ratio; Holmium, dissolved; Isotope dilution; Lanthanum, dissolved; Latitude of event; Longitude of event; Lutetium, dissolved; Middle rare-earth elements anomaly; Neodymium, dissolved; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, standard deviation; North Greenland Sea; Oxygen; Oxygen saturation; Polarstern; Praseodymium, dissolved; Pressure, water; PS80; PS80/013-1; PS80/016-1; PS80/019-1; PS80/026-1; PS80/050-1; PS80/055-1; PS80/068-1; PS80/086-1; PS80/092-1; PS80/097-1; PS80/106-1; PS80/110-1; PS80/113-1; PS80/118-1; PS80/121-1; PS80/124-1; PS80/126-1; PS80/130-1; PS80/132-1; PS80/134-1; Salinity; Samarium, dissolved; Sample ID; Temperature, water; Temperature, water, potential; Terbium, dissolved; Thulium, dissolved; Ytterbium, dissolved; Yttrium, dissolved; ε-Neodymium; ε-Neodymium, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 3962 data points
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    DATA PANGAEA
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