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  • PANGAEA  (75)
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  • 1
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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
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 2
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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
  • 3
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    Radium in Arctic surface water
    PANGAEA
    In:  Supplement to: Rutgers van der Loeff, Michiel M; Cai, Pinghe; Stimac, Ingrid; Bauch, Dorothea; Hanfland, Claudia; Roeske, Tobias; Moran, S Bradley (2012): Shelf-basin exchange times of Arctic surface waters estimated from 228Th/228Ra disequilibrium. Journal of Geophysical Research: Oceans, 177, C03024, https://doi.org/10.1029/2011JC007478
    Details
    Publication Date: 2023-05-12
    Description: The transpolar drift is strongly enriched in 228Ra accumulated on the wide Arctic shelves with subsequent rapid offshore transport. We present new data of Polarstern expeditions to the central Arctic and to the Kara and Laptev seas. Because 226Ra activities in Pacific waters are 30% higher than in Atlantic waters, we correct 226Ra for the Pacific admixture when normalizing 228Ra with 226Ra. The use of 228Ra decay as age marker critically depends on the constancy in space and time of the source activity, a condition that has not yet adequately been tested. While 228Ra decays during transit over the central basin, ingrowth of 228Th could provide an alternative age marker. The high 228Th/228Ra activity ratio (AR = 0.8-1.0) in the central basins is incompatible with a mixing model based on horizontal eddy diffusion. An advective model predicts that 228Th grows to an equilibrium AR, the value of which depends on the scavenging regime. The low AR over the Lomonosov Ridge (AR = 0.5) can be due to either rapid transport (minimum age without scavenging 1.1 year) or enhanced scavenging. Suspended particulate matter load (derived from beam transmission and particulate 234Th) and total 234Th depletion data show that scavenging, although extremely low in the central Arctic, is enhanced over the Lomonosov Ridge, making an age of 3 years more likely. The combined data of 228Ra decay and 228Th ingrowth confirm the existence of a recirculating gyre in the surface water of the eastern Eurasian Basin with a river water residence time of at least 3 years.
    Keywords: Arctic Ocean; ARK-XI/1; ARK-XXII/2; AWI_MarGeoChem; Barents Sea; CTD/Rosette; CTD-RO; East Siberian Sea; Expendable CTD; In situ pump; ISP; Kara Sea; Laptev Sea; Marine Geochemistry @ AWI; Polarstern; PS36; PS36/002-1; PS36/003-1; PS36/004-1; PS36/006-1; PS36/007-2; PS36/009-1; PS36/010-1; PS36/012-1; PS36/016-1; PS36/018-1; PS36/019-2; PS36/021-1; PS36/023-2; PS36/024A-2; PS36/025-2; PS36/029-2; PS36/031-3; PS36/033-2; PS36/040-2; PS36/042-2; PS36/044-2; PS36/045-2; PS36/047-2; PS36/049-2; PS36/051-1; PS36/052-1; PS36/056-2; PS36/060-1; PS36/062-1; PS36/065-1; PS36/071-1; PS36/073-1; PS36/080-2; PS36/084-1; PS36/089-2; PS36/091-2; PS36/094-1; PS70/237-4; PS70/239-2; PS70/257-6; PS70/261-3; PS70/263-3; PS70/264-6; PS70/266-3; PS70/268-6; PS70/271-6; PS70/272-2; PS70/274-5; PS70/276-4; PS70/277-4; PS70/279-4; PS70/284-2; PS70/285-9; PS70/290-5; PS70/294-6; PS70/299-3; PS70/301-4; PS70/303-2; PS70/309-6; PS70/312-6; PS70/322-5; PS70/326-4; PS70/328-14; PS70/333-6; PS70/335-2; PS70/338-4; PS70/342-12; PS70/346-2; PS70/349-3; PS70/352-7; PS70/358-2; PS70/363-9; PS70/371-7; PS70/377-3; PS70/382-2; PS70/385-7; PS70/389-4; PS70/400-3; PS70/407-3; PS70/409-2; PS70/411-4; PS70/XCTD58-1; PS70 SPACE DAMOCLES; XCTD
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 4
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    Radium isotopes and 228Th in surface water samples collected on POLARSTERN expedition PS78 (2021)
    PANGAEA
    Details
    Publication Date: 2023-02-12
    Description: 228Ra is strongly enriched in shelf waters and its half-life (5.8 years) is well suited to study the fate of shelf-derived water in the central Arctic. During PS78 (TRANSARC I) we studied the distribution of 228Ra in surface waters of the central Arctic to investigate how this 228Ra signal is transported in the Transpolar Drift. Water from the ships' seawater intake (Sta 196, 205) or from a submersible pump lowered to 10m depth on hydrographic stations (from station 209 onwards) was filtered and passed over MnO2-coated cartridges to absorb Radium and Thorium. Short-lived 224Ra, as analog for the total concentration of its parent 228Th, was determined on board with RaDeCC counting. In the lab, the cartridges were leached and long-lived Radium isotopes were measured by gamma spectroscopy.
    Keywords: Arctic; Arctic Ocean; ARK-XXVI/3; DATE/TIME; Depth, bathymetric; DEPTH, water; Event label; Fraction; Gamma spectroscopy; GPUMP; Laptev Sea; LATITUDE; LONGITUDE; Polarstern; PS78/196-3; PS78/205; PS78/209-5; PS78/212-4; PS78/218-6; PS78/221; PS78/222-6; PS78/224-2; PS78/227-4; PS78/230-6; PS78/232-2; PS78/233-2; PS78/234-2; PS78/235-7; PS78/236-2; PS78/237-2; PS78/239-6; PS78/241-2; PS78/242-3; PS78/243-2; PS78/244-2; PS78/245-6; PS78/246-2; PS78/247-2; PS78/248-3; PS78/249-2; PS78/250-6; PS78/251-2; PS78/252-2; PS78/253-2; PS78/257-2; PS78/259-3; PS78/271-2; PS78/272-4; PS78/273; PS78/274-2; PS78/276-5; PS78/278-2; PS78/280-5; PS78/283-2; PS78/285-5; PS78 TransArc; PUMP; RaDeCC; Radium; Radium-224; Radium-224, standard deviation; Radium-226; Radium-226, standard deviation; Radium-228; Radium-228, standard deviation; Salinity; Ships non-toxic pump; Station label; Temperature, water, potential; Thorium; TPD; Water pump; δ18O, water
    Type: Dataset
    Format: text/tab-separated-values, 460 data points
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    DATA PANGAEA
  • 5
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    Radium isotopes and 228Th in water column samples collected on POLARSTERN expedition PS94 (2021)
    PANGAEA
    Details
    Publication Date: 2023-02-24
    Description: Radium isotopes are produced by decay of an isotope of thorium, a highly particle reactive element. Radium is relatively soluble in seawater such that once a thorium isotope in suspended or bottom sediments decays, a fraction of the produced radium isotope may be released to solution. 224Ra (3.7-day half-life) and 223Ra (11.4-day half-life) are used extensively as tracers for interaction on the shelf and for submarine groundwater discharge (SGD). 228Ra is strongly enriched in shelf waters and in the Transpolar Drift (TPD) and its half-life (5.8 years) is well suited to study the fate of this shelf-derived water in the central Arctic. This dataset collected in the framework of GEOTRACES during PS94 in 2015 shows that the input of 228Ra in the TPD has increased since previous studies in 2007 and 2011. The distribution of 228Ra-daughter 228Th (1.9 y half-life) and the 228Th/228Ra ratio are measured to trace particle fluxes. The accumulation of 226Ra (1620 y half-life) in the deep Makarov Basin can be used as a measure of basin ventilation time.
    Keywords: Arctic Ocean; ARK-XXIX/3; Barents Sea; DATE/TIME; Depth, bathymetric; Depth, relative; DEPTH, water; Event label; Fraction; Gamma spectroscopy; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; In situ pump; In-Situ-Pump; ISP; LATITUDE; LONGITUDE; Polarstern; PS94; PS94/004-4; PS94/032-8; PS94/050-5; PS94/054; PS94/058; PS94/062; PS94/068; PS94/075; PS94/081-9; PS94/087; PS94/091; PS94/096-5; PS94/099; PS94/101-6; PS94/117-7; PS94/119; PS94/121; PS94/123; PS94/125-8; PS94/129; PS94/132; PS94/134; PS94/135; PS94/136; PS94/137; PS94/138; PS94/139; PS94/140; PS94/147; PS94/153-6; PS94/161-5; PS94/169; PS94/173; PUMP; RaDeCC; Radium; Radium-224; Radium-224, standard deviation; Radium-224/Radium-228 ratio; Radium-224/Radium-228 ratio, error; Radium-224 excess; Radium-224 excess, standard deviation; Radium-226; Radium-226, standard deviation; Radium-228; Radium-228, standard deviation; Salinity; Station label; Temperature, water, potential; Thorium; Thorium-228; Thorium-228, standard deviation; Water pump; δ18O, water
    Type: Dataset
    Format: text/tab-separated-values, 1501 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 6
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    Radium isotopes and 228Th in surface water samples collected on POLARSTERN expedition PS94 (2021)
    PANGAEA
    Details
    Publication Date: 2023-02-24
    Description: Radium isotopes are produced by decay of an isotope of thorium, a highly particle reactive element. Radium is relatively soluble in seawater such that once a thorium isotope in suspended or bottom sediments decays, a fraction of the produced radium isotope may be released to solution. 224Ra (3.7-day half-life) and 223Ra (11.4-day half-life) are used extensively as tracers for interaction on the shelf and for submarine groundwater discharge (SGD). 228Ra is strongly enriched in shelf waters and in the Transpolar Drift (TPD) and its half-life (5.8 years) is well suited to study the fate of this shelf-derived water in the central Arctic. This dataset collected in the framework of GEOTRACES during PS94 in 2015 shows that the input of 228Ra in the TPD has increased since previous studies in 2007 and 2011. The distribution of 228Ra-daughter 228Th (1.9 y half-life) and the 228Th/228Ra ratio are measured to trace particle fluxes. The accumulation of 226Ra (1620 y half-life) in the deep Makarov Basin can be used as a measure of basin ventilation time.
    Keywords: Arctic Ocean; Area/locality; ARK-XXIX/3; Barents Sea; DATE/TIME; DEPTH, water; Event label; Gamma spectroscopy; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; In situ pump; In-Situ-Pump; ISP; LATITUDE; LONGITUDE; Method comment; Polarstern; PS94; PS94/050-5; PS94/054; PS94/058; PS94/062; PS94/068; PS94/075; PS94/081-9; PS94/087; PS94/091; PS94/096-5; PS94/099; PS94/101-6; PS94/117-7; PS94/119; PS94/121; PS94/123; PS94/125-8; PS94/129; PS94/132; PS94/135; PS94/136; PS94/137; PS94/138; PS94/139; PS94/140; PS94/147; PS94/153-6; PS94/161-5; PS94/169; PS94/173; PUMP; RaDeCC; Radium; Radium-224; Radium-224, standard deviation; Radium-224 excess; Radium-224 excess, standard deviation; Radium-226; Radium-226, standard deviation; Radium-228; Radium-228, standard deviation; Station label; Thorium; Thorium-228; Thorium-228, particulate; Thorium-228, standard deviation; Water pump
    Type: Dataset
    Format: text/tab-separated-values, 602 data points
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    DATA PANGAEA
  • 7
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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
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 8
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    (Table B6) Measurements of δ¹⁸O and salinity during Dalnie Zelentsy cruise DZ-68 (2000)
    PANGAEA
    Details
    Publication Date: 2023-03-16
    Keywords: AWI_Paleo; Chejsa Island; Dalniye Zelentsy; DEPTH, water; DZ-68; DZ-68_1; DZ-68_10; DZ-68_11; DZ-68_12; DZ-68_13; DZ-68_14; DZ-68_15; DZ-68_16; DZ-68_2; DZ-68_3; DZ-68_5; DZ-68_8; DZ-68_9; Green Bell Island; Latitude of event; Longitude of event; Mass spectrometer Finnigan MAT 251; Nordenskiöld Bay; off Franz-Josef-Land; off Novaya Zemlya; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Quaternary Environment of the Eurasian North; QUEEN; Salinity; Temperature, water; Water sample; Wilczek Island; WS; δ18O, water
    Type: Dataset
    Format: text/tab-separated-values, 53 data points
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    DATA PANGAEA
  • 9
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    Hydrochemistry measured on water bottle samples during ODEN cruise OD91 (2002)
    PANGAEA
    Details
    Publication Date: 2023-03-16
    Keywords: 91004; 91008; Arctic Ocean; AWI_Paleo; CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Elevation of event; Event label; Latitude of event; Longitude of event; Mass spectrometer Finnigan MAT 251; MULT; Multiple investigations; OD91; OD91_004; OD91_008; OD91_009-1; OD91_010-1; OD91_011-1; OD91_012-1; OD91_014-1; OD91_016-1; OD91_017-1; OD91_018-1; OD91_021-1; OD91_023-1; OD91_026-1; OD91_031-1; OD91_033-1; OD91_043-1; OD91_046-1; OD91_048-1; OD91_049-1; OD91_051-1; OD91_055-1; OD91_058-1; OD91_061-1; Oden; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Quaternary Environment of the Eurasian North; QUEEN; Salinity; Silicate; Silicon Cycling in the World Ocean; SINOPS; Temperature, water; δ18O, water
    Type: Dataset
    Format: text/tab-separated-values, 1179 data points
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    DATA PANGAEA
  • 10
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    Hydrochemistry measured on water bottle samples at CTD station M8/1_617 (2002)
    PANGAEA
    Details
    Publication Date: 2023-03-16
    Keywords: AWI_Paleo; DEPTH, water; Greenland Sea; M8/1; M8/1_617; Mass spectrometer Finnigan MAT 251; Meteor (1986); MULT; Multiple investigations; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Quaternary Environment of the Eurasian North; QUEEN; Salinity; Silicon Cycling in the World Ocean; SINOPS; Temperature, water; δ18O, water
    Type: Dataset
    Format: text/tab-separated-values, 62 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
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