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  • 2000-2004  (18)
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Keywords
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  • 1
    Online Resource
    Online Resource
    GEOTRACES: studying the global marine biogeochemistry of trace elements and isotopes (2003)
    Details Availability
    Keywords: marine sciences ; biogeochemistry ; isotopes ; trace elements
    In: (2003)
    In: year:2003
    Type of Medium: Online Resource
    URL: http://www.ldeo.columbia.edu/res/poj/geotraces
    Language: Undetermined
    Note: EOS : transactions / American Geophysical Union
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    GEOMAR CATALOGUE
    Link to Library Catalog
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  • 2
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    Nd concentrations and isotopic composition in the western Mediterranean Sea (2002)
    PANGAEA
    In:  Supplement to: Henry, F; Jeandel, Catherine; Dupré, Bernard; Minster, Jean-Francois (1994): Particulate and dissolved Nd in the western Mediterranean Sea: Sources, fate and budget. Marine Chemistry, 45(4), 283-305, https://doi.org/10.1016/0304-4203(94)90075-2
    Details
    Publication Date: 2024-02-01
    Description: The concentration and isotopic composition of Nd in water and particles collected in the western Mediterranean Sea are studied by two complementary approaches. The first examines local vertical profiles and time series; the second considers the global Nd budget of the whole western Mediterranean Sea. These two approaches are used to quantify the Nd inputs and the dissolved/particulate exchange processes in the water column. Two profiles of Nd in seawater in the Ligurian Sea taken in May and October 1992 show an average epsilon-Nd(0) = -9.6 ± 0.5. Seawater from the Strait of Sicily, representative of the eastern waters flowing into the western basin, is more radiogenic [epsilon-Nd(0) = -7.7 ± 0.6]. Profiles of particulate matter collected in sediment traps in coastal (Gulf of Lions) and offshore (Ligurian Sea) environments are also shown. Particles are enriched in Nd and are more radiogenic near the coast than offshore. Measurements of Nd concentration and epsilon-Nd(0) of external sources to the western Mediterranean Sea compared with the literature data demonstrate that particulate flux of atmospheric Saharan origin are more rich ([Nd] = 38 ± 10 µg/g) and less radiogenic [epsilon-Nd(0) = -13.0 ± 1.0] than riverine particulate discharge ([Nd] = 21.5 ± 4.4 µg/g; epsilon-Nd(0) = -10.1 ± 0.5), allowing to trace Nd particulate inputs in the water column. Nd atmospheric flux appears to be the major source into the whole western basin, although lateral advection of riverine material is the prevailing process in the coastal environment. Offshore, the vertical propagation of an important Saharan dust event has been recorded for two months in sediment traps at 80, 200 and 1000 m. The evolution of the resulting negative epsilon-Nd(0) peak along depth and time shows that the particles reach 200 m on a time scale of one week. For the first time, the Nd budget in the western Mediterranean basin is constrained by both concentrations and isotopic compositions measured in particles and seawater. Surface budget requires a remobilization of 30 ± 20% of particulate Nd input. In deep water, dissolved Nd concentrations are balanced by a scavenging of 10 ± 20% of the sinking particulate flux. On the other hand, the deep isotopic compositions suggest an exchange between 30 ± 20% of the sinking particles and the deep waters. The hypothesis of a non-stationary regime for the surface waters in the Ligurian Sea is also considered.
    Keywords: Biogeochemical Processes in the Oceans and Fluxes; CTD/Rosette; CTD-RO; DYF2; DYF4-Calvi; DYFAMED; DYFAMED_19920521; DYFAMED_19921013; Grand-Rhonecanyon; JGOFS; Joint Global Ocean Flux Study; Lacaze_Duthiers_Canyon; MEDAR/MEDATLAS; Mediterranean Data Archaeology and Rescue; PROOF; Time-series station; Trap; TRAP
    Type: Dataset
    Format: application/zip, 4 datasets
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    DATA PANGAEA
  • 3
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    (Table 3) Nd concentrations and isotopic composition at trap DYF2 (2002)
    PANGAEA
    Details
    Publication Date: 2024-02-01
    Keywords: Aluminium; Biogeochemical Processes in the Oceans and Fluxes; DATE/TIME; Date/time end; DEPTH, water; Duration, number of days; DYF2; DYFAMED; JGOFS; Joint Global Ocean Flux Study; Neodymium; Neodymium, flux; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, error; PROOF; Sample code/label; Time-series station; Trap; TRAP; ε-Neodymium, standard deviation; ε-Neodymium (0)
    Type: Dataset
    Format: text/tab-separated-values, 170 data points
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    DATA PANGAEA
  • 4
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    Particle flux at trap DYF19 (2004)
    PANGAEA
    Details
    Publication Date: 2024-02-06
    Keywords: Aluminium, flux; Barium, flux; Biogeochemical Processes in the Oceans and Fluxes; Calcium, flux; Carbon, total, flux; DATE/TIME; Date/time end; DEPTH, water; Duration, number of days; DYF19; DYFAMED; JGOFS; Joint Global Ocean Flux Study; Manganese, flux; Organic matter, particulate, flux; PROOF; Strontium, flux; Thorium, flux; Time-series station; Trap; TRAP
    Type: Dataset
    Format: text/tab-separated-values, 20 data points
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    DATA PANGAEA
  • 5
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    Particle flux at trap DYF18 (2004)
    PANGAEA
    Details
    Publication Date: 2024-02-06
    Keywords: Aluminium, flux; Barium, flux; Biogeochemical Processes in the Oceans and Fluxes; Calcium, flux; Carbon, total, flux; DATE/TIME; Date/time end; DEPTH, water; Duration, number of days; DYF18; DYFAMED; JGOFS; Joint Global Ocean Flux Study; Manganese, flux; Organic matter, particulate, flux; PROOF; Strontium, flux; Thorium, flux; Time-series station; Trap; TRAP
    Type: Dataset
    Format: text/tab-separated-values, 228 data points
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    DATA PANGAEA
  • 6
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    Thorium radionuclides analysed at bottle station ANTARES-IV_004 (2004)
    PANGAEA
    Details
    Publication Date: 2024-02-01
    Keywords: ANTARES-IV; ANTARES-IV_004; Biogeochemical Processes in the Oceans and Fluxes; CTD/Rosette; CTD-RO; DEPTH, water; JGOFS; Joint Global Ocean Flux Study; Marion Dufresne (1995); PROOF; Thorium-234, dissolved; Thorium-234, dissolved, standard deviation; Thorium-234, particulate; Thorium-234, particulate, standard deviation; Thorium-234, total; Thorium-234, total, standard deviation; Thorium-234/Uranium-238 activity ratio; Thorium-234/Uranium-238 activity ratio, standard deviation; Uranium-238
    Type: Dataset
    Format: text/tab-separated-values, 45 data points
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    DATA PANGAEA
  • 7
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    Thorium radionuclides analysed at bottle station ANTARES-IV_021 (2004)
    PANGAEA
    Details
    Publication Date: 2024-02-01
    Keywords: ANTARES-IV; ANTARES-IV_021; Biogeochemical Processes in the Oceans and Fluxes; CTD/Rosette; CTD-RO; DEPTH, water; JGOFS; Joint Global Ocean Flux Study; Marion Dufresne (1995); PROOF; Thorium-230 excess, dissolved; Thorium-230 excess, dissolved, standard deviation; Thorium-230 excess, particulate; Thorium-230 excess, particulate, standard deviation; Thorium-232, dissolved; Thorium-232, dissolved, standard deviation; Thorium-232, particulate; Thorium-232, particulate, standard deviation; Thorium-234, dissolved; Thorium-234, dissolved, standard deviation; Thorium-234, particulate; Thorium-234, particulate, standard deviation; Thorium-234, total; Thorium-234, total, standard deviation; Thorium-234/Uranium-238 activity ratio; Thorium-234/Uranium-238 activity ratio, standard deviation; Uranium-238
    Type: Dataset
    Format: text/tab-separated-values, 156 data points
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    DATA PANGAEA
  • 8
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    Thorium radionuclides analysed at bottle station ANTARES-IV_033 (2004)
    PANGAEA
    Details
    Publication Date: 2024-02-01
    Keywords: ANTARES-IV; ANTARES-IV_033; Biogeochemical Processes in the Oceans and Fluxes; CTD/Rosette; CTD-RO; DEPTH, water; JGOFS; Joint Global Ocean Flux Study; Marion Dufresne (1995); PROOF; Thorium-234, dissolved; Thorium-234, dissolved, standard deviation; Thorium-234, particulate; Thorium-234, particulate, standard deviation; Thorium-234, total; Thorium-234, total, standard deviation; Thorium-234/Uranium-238 activity ratio; Thorium-234/Uranium-238 activity ratio, standard deviation; Uranium-238
    Type: Dataset
    Format: text/tab-separated-values, 45 data points
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  • 9
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    Thorium radionuclides analysed at bottle station ANTARES-IV_030 (2004)
    PANGAEA
    Details
    Publication Date: 2024-02-01
    Keywords: ANTARES-IV; ANTARES-IV_030; Biogeochemical Processes in the Oceans and Fluxes; CTD/Rosette; CTD-RO; DEPTH, water; JGOFS; Joint Global Ocean Flux Study; Marion Dufresne (1995); PROOF; Thorium-234, dissolved; Thorium-234, dissolved, standard deviation; Thorium-234, particulate; Thorium-234, particulate, standard deviation; Thorium-234, total; Thorium-234, total, standard deviation; Thorium-234/Uranium-238 activity ratio; Thorium-234/Uranium-238 activity ratio, standard deviation; Uranium-238
    Type: Dataset
    Format: text/tab-separated-values, 45 data points
    Location Call Number Limitation Availability
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  • 10
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    Thorium radionuclides analysed at bottle station ANTARES-IV_039 (2004)
    PANGAEA
    Details
    Publication Date: 2024-02-01
    Keywords: ANTARES-IV; ANTARES-IV_039; Biogeochemical Processes in the Oceans and Fluxes; CTD/Rosette; CTD-RO; DEPTH, water; JGOFS; Joint Global Ocean Flux Study; Marion Dufresne (1995); PROOF; Thorium-234, dissolved; Thorium-234, dissolved, standard deviation; Thorium-234, particulate; Thorium-234, particulate, standard deviation; Thorium-234, total; Thorium-234, total, standard deviation; Thorium-234/Uranium-238 activity ratio; Thorium-234/Uranium-238 activity ratio, standard deviation; Uranium-238
    Type: Dataset
    Format: text/tab-separated-values, 45 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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