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  • 2010-2014  (56)
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  • 1
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    Unknown
    Millenial variability of dust in South Atlantic sediment records (2014)
    PANGAEA
    In:  Supplement to: Anderson, Robert F; Barker, Stephen; Fleisher, Martin Q; Gersonde, Rainer; Goldstein, Steven L; Kuhn, Gerhard; Mortyn, P Graham; Pahnke, Katharina; Sachs, Julian P (2014): Biological response to millennial variability of dust and nutrient supply in the Subantarctic South Atlantic Ocean. Philosophical Transactions of the Royal Society A-Mathematical Physical and Engineering Sciences, 372(2019), 20130054, https://doi.org/10.1098/rsta.2013.0054
    Details
    Publication Date: 2023-03-16
    Description: Fluxes of lithogenicmaterial and fluxes of three palaeo productivity proxies (organic carbon, biogenic opal and alkenones) over the past 100,000 years were determined using the 230Th-normalization method in three sediment cores from the Subantarctic South Atlantic Ocean. Features in the lithogenic flux record of each core correspond to similar features in the record of dust deposition in the EPICA Dome C ice core. Biogenic fluxes correlate with lithogenic fluxes in each sediment core. Our preferred interpretation is that South American dust, most probably from Patagonia, constitutes a major source of lithogenic material in Subantarctic South Atlantic sediments, and that past biological productivity in this region responded to variability in the supply of dust, probably due to biologically available iron carried by the dust. Greater nutrient supply as well as greater nutrient utilization (stimulated by dust) contributed to Subantarctic productivity during cold periods, in contrast to the region south of the Antarctic Polar Front (APF), where reduced nutrient supply during cold periods was the principal factor limiting productivity. The anti-phased patterns of productivity on opposite sides of the APF point to shifts in the physical supply of nutrients and to dust as cofactors regulating productivity in the Southern Ocean.
    Keywords: AWI_Paleo; Paleoenvironmental Reconstructions from Marine Sediments @ AWI
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 2
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    Radionuclides measured on water bottle samples during SONNE cruise SO202 (INOPEX) (2013)
    PANGAEA
    In:  Supplement to: Hayes, Christopher T; Anderson, Robert F; Jaccard, Samuel L; Francois, Roger; Fleisher, Martin Q; Soon, Maureen; Gersonde, Rainer (2013): A new perspective on boundary scavenging in the North Pacific Ocean. Earth and Planetary Science Letters, 369-370, 86-97, https://doi.org/10.1016/j.epsl.2013.03.008
    Details
    Publication Date: 2023-03-17
    Description: Boundary scavenging, or the enhanced removal of adsorption-prone elements from the ocean in areas of high particle flux, is an often cited, though not well-quantified, concept used to understand the oceanic distribution of many trace metals. Because 230Th and 231Pa are produced uniformly from uranium decay and removed differentially by scavenging, the process of boundary scavenging can be elucidated by a more detailed knowledge of their water column distributions. To this end, filtered seawater was collected across the gradients in particle flux which span the subarctic Pacific: in the west during the Innovative North Pacific Experiment (INOPEX) and in the east along Line P. Lateral concentration gradients of dissolved 230Th are small throughout the subarctic Pacific at 12 sites of variable particle flux. This contradicts the prediction of the traditional boundary scavenging model. A compilation of water column data from throughout the North Pacific reveals much larger lateral concentration gradients for 230Th between the subarctic North Pacific and subtropical gyre, over lateral gradients in scavenging intensity similar to those found within the subarctic. This reflects a biogeochemical-province aspect to scavenging. Upper water column distributions of 231Pa and 231Pa/230Th ratio are consistent with the influence of scavenging by biogenic opal, while deep waters (〉2.5 km) reveal an additional 231Pa sink possibly related to manganese oxides produced at continental margins or ridge crests.
    Keywords: CTD, Sea-Bird; CTD/Rosette; CTD-RO; Date; Date/Time of event; DEPTH, water; Elevation of event; Event label; INOPEX; Latitude of event; Longitude of event; North Pacific Ocean; Oxygen; Pressure, water; Protactinium-231, dissolved; Protactinium-231, dissolved, standard deviation; Salinity; see further details; SO202/1; SO202/1_05-5; SO202/1_24-1; SO202/1_32-1; SO202/1_36-1; SO202/1_39-1; SO202/1_41-2; SO202/1_44-3; Sonne; Temperature, water; Thorium-230, dissolved; Thorium-230, dissolved, standard deviation; Thorium-232, dissolved; Thorium-232, dissolved, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 1043 data points
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  • 3
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    Physical properties, and carbon and opal concentrations of sediment core PS2498-1 (2014)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: ANT-XI/2; AWI_Paleo; Carbon, inorganic, total; Carbon, organic, total; Carbon, total; Density; Density, dry bulk; Density, grain; Density, wet bulk; DEPTH, sediment/rock; Gravity corer (Kiel type); Opal, biogenic silica; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; Porosity; PS2498-1; PS28; PS28/304; SL; South Atlantic; Water content, wet mass
    Type: Dataset
    Format: text/tab-separated-values, 3370 data points
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  • 4
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    Salt corrected carbon and opal concentrations of sediment core PS2498-1 (2014)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: ANT-XI/2; AWI_Paleo; Calcium carbonate; Calculated; Calculated, salt-corrected; Carbon, inorganic, total; Carbon, organic, total; Carbon, total; DEPTH, sediment/rock; Gravity corer (Kiel type); Opal, biogenic silica; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS2498-1; PS28; PS28/304; Salt content; SL; South Atlantic; Terrigenous; Water content, wet mass
    Type: Dataset
    Format: text/tab-separated-values, 2696 data points
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  • 5
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    Age, 232Th, 230Th, 238U, 231Pa, CaCO3, organic carbon, and opal concentrations of sediment core PS2498-1, with calculated 230Th-normalized mass flux and calculated lithogenic fraction (2014)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Accumulation rate, mass; Accumulation rate, sediment, standard deviation; Age model; Age model, optional; ANT-XI/2; AWI_Paleo; Calculated; DEPTH, sediment/rock; Estimated; Gravity corer (Kiel type); interpolated; Lithogenic material; Opal, biogenic silica; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; Protactinium-231; Protactinium-231, standard deviation; Protactinium-231 excess, decay-corrected; Protactinium-231 excess, decay-corrected, standard deviation; PS2498-1; PS28; PS28/304; SL; South Atlantic; Thorium-230; Thorium-230, standard deviation; Thorium-230 excess, decay-corrected; Thorium-230 excess, decay-corrected, standard deviation; Thorium-232; Thorium-232, standard deviation; Uranium-238; Uranium-238, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 3888 data points
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  • 6
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    (Tab 4) Granulometry of surface sediments in tenth phi classes on core-top sediments during SONNE cruise SO202 (INOPEX) (2014)
    PANGAEA
    Details
    Publication Date: 2023-10-05
    Keywords: Beckman Coulter Laser diffraction particle size analyzer LS 13 320; DEPTH, sediment/rock; Elevation of event; Event label; INOPEX; Latitude of event; Longitude of event; MUC; MultiCorer; North Pacific Ocean; Size fraction 0.397-0.370 µm, 11.3-11.4 phi; Size fraction 0.45-0.41 µm, 11.1-11.3 phi; Size fraction 0.488-0.456 µm, 11.0-11.1 phi; Size fraction 0.523-0.488 µm, 10.9-11.0 phi; Size fraction 0.6-0.54 µm, 10.7-10.9 phi; Size fraction 0.644-0.601 µm, 10.6-10.7 phi; Size fraction 0.72-0.66 µm, 10.4-10.6 phi; Size fraction 0.793-0.740 µm, 10.3-10.4 phi; Size fraction 0.850-0.793 µm, 10.2-10.3 phi; Size fraction 0.95-0.87 µm, 10.0-10.2 phi; Size fraction 1.047-0.977 µm, 9.9-10.0 phi; Size fraction 1.122-1.047 µm, 9.8-9.9 phi; Size fraction 1.26-1.15 µm, 9.6-9.8 phi; Size fraction 1.381-1.289 µm, 9.5-9.6 phi; Size fraction 1.480-1.381 µm, 9.4-9.5 phi; Size fraction 1.67-1.52 µm, 9.2-9.4 phi; Size fraction 1.822-1.700 µm, 9.1-9.2 phi; Size fraction 1.953-1.822 µm, 9.0-9.1 phi; Size fraction 10.78-9.82 µm, 6.5-6.7 phi; Size fraction 101.532-94.732 µm, 3.3-3.4 phi; Size fraction 1041.05-948.34 µm, (-0.1)-0.1 phi; Size fraction 108.819-101.532 µm, 3.2-3.3 phi; Size fraction 11.842-11.049 µm, 6.4-6.5 phi; Size fraction 1148.698-1071.773 µm, (-0.2) to (-0.1) phi; Size fraction 12.691-11.842 µm, 6.3-6.4 phi; Size fraction 121.84-110.99 µm, 3.0-3.2 phi; Size fraction 1231.144-1148.698 µm, (-0.3) to (-0.2) phi; Size fraction 133.972-125.000 µm, 2.9-3.0 phi; Size fraction 1377.2-1254.55 µm, (-0.5) to (-0.3) phi; Size fraction 14.26-12.99 µm, 6.1-6.3 phi; Size fraction 143.587-133.972 µm, 2.8-2.9 phi; Size fraction 15.625-14.579 µm, 6.0-6.1 phi; Size fraction 1515.717-1414.214 µm, (-0.6) to (-0.5) phi; Size fraction 16.746-15.625 µm, 5.9-6.0 phi; Size fraction 161.18-146.82 µm, 2.6-2.8 phi; Size fraction 1624.505-1515.717 µm, (-0.7) to (-0.6) phi; Size fraction 176.777-164.938 µm, 2.5-2.6 phi; Size fraction 18.86-17.18 µm, 5.7-5.9 phi; Size fraction 1821.89-1659.64 µm, (-0.9) to (-0.7) phi; Size fraction 189.465-176.777 µm, 2.4-2.5 phi; Size fraction 2.21-2.01 µm, 8.8-9.0 phi; Size fraction 2.405-2.244 µm, 8.7-8.8 phi; Size fraction 2.577-2.405 µm, 8.6-8.7 phi; Size fraction 2.92-2.66 µm, 8.4-8.6 phi; Size fraction 20.617-19.237 µm, 5.6-5.7 phi; Size fraction 2000.000-1866.066 µm, (-1.0) to (-0.9) phi; Size fraction 213.22-194.23 µm, 2.2-2.4 phi; Size fraction 22.097-20.617 µm, 5.5-5.6 phi; Size fraction 233.258-217.638 µm, 2.1-2.2 phi; Size fraction 24.95-22.73 µm, 5.3-5.5 phi; Size fraction 250.000-233.258 µm, 2.0-2.1 phi; Size fraction 27.205-25.383 µm, 5.2-5.3 phi; Size fraction 282.07-256.95 µm, 1.8-2.0 phi; Size fraction 29.157-27.205 µm, 5.1-5.2 phi; Size fraction 3.173-2.960 µm, 8.3-8.4 phi; Size fraction 3.401-3.173 µm, 8.2-8.3 phi; Size fraction 3.86-3.52 µm, 8.0-8.2 phi; Size fraction 307.786-287.175 µm, 1.7-1.8 phi; Size fraction 329.877-307.786 µm, 1.6-1.7 phi; Size fraction 33.01-30.07 µm, 4.9-5.1 phi; Size fraction 35.897-33.493 µm, 4.8-4.9 phi; Size fraction 373.15-339.92 µm, 1.4-1.6 phi; Size fraction 38.473-35.897 µm, 4.7-4.8 phi; Size fraction 4.187-3.906 µm, 7.9-8.0 phi; Size fraction 4.66-4.24 µm, 7.7-7.9 phi; Size fraction 406.126-378.929 µm, 1.3-1.4 phi; Size fraction 43.67-39.78 µm, 4.5-4.7 phi; Size fraction 435.275-406.126 µm, 1.2-1.3 phi; Size fraction 47.366-44.194 µm, 4.4-4.5 phi; Size fraction 493.63-449.67 µm, 1.0-1.2 phi; Size fraction 5.154-4.809 µm, 7.6-7.7 phi; Size fraction 5.524-5.154 µm, 7.5-7.6 phi; Size fraction 52.63-47.94 µm, 4.2-4.4 phi; Size fraction 535.887-500.000 µm, 0.9-1.0 phi; Size fraction 58.315-54.409 µm, 4.1-4.2 phi; Size fraction 594.87-541.89 µm, 0.7-0.9 phi; Size fraction 6.16-5.61 µm, 7.3-7.5 phi; Size fraction 6.801-6.346 µm, 7.2-7.3 phi; Size fraction 62.500-58.315 µm, 4.0-4.1 phi; Size fraction 659.754-615.572 µm, 0.6-0.7 phi; Size fraction 69.62-63.42 µm, 3.8-4.0 phi; Size fraction 7.289-6.801 µm, 7.1-7.2 phi; Size fraction 707.107-659.754 µm, 0.5-0.6 phi; Size fraction 76.947-71.794 µm, 3.7-3.8 phi; Size fraction 786.95-716.87 µm, 0.3-0.5 phi; Size fraction 8.15-7.42 µm, 6.9-7.1 phi; Size fraction 8.974-8.373 µm, 6.8-6.9 phi; Size fraction 82.469-76.947 µm, 3.6-3.7 phi; Size fraction 870.551-812.252 µm, 0.2-0.3 phi; Size fraction 9.618-8.974 µm, 6.7-6.8 phi; Size fraction 92.1-83.9 µm, 3.4-3.6 phi; Size fraction 933.033-870.551 µm, 0.1-0.2 phi; SO202/1; SO202/1_02-4; SO202/1_03-4; SO202/1_04-3; SO202/1_05-3; SO202/1_06-2; SO202/1_08-1; SO202/1_09-2; SO202/1_23-4; SO202/1_24-2; SO202/1_25-1; SO202/1_27-1; SO202/1_28-1; SO202/1_29-5; SO202/1_31-5; SO202/1_32-5; SO202/1_33-5; SO202/1_34-4; SO202/1_36-6; SO202/1_38-1; SO202/1_39-2; SO202/1_41-3; SO202/1_42-3; SO202/1_45-2; Sonne
    Type: Dataset
    Format: text/tab-separated-values, 2116 data points
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  • 7
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    Salt-corrected opal and barium concentration measured on core-top sediments during SONNE cruise SO202 (INOPEX) (2014)
    PANGAEA
    Details
    Publication Date: 2023-10-05
    Keywords: Barium; Barium, biogenic; Barium, biogenic, flux; Barium, biogenic, flux, standard deviation; Barium, biogenic, standard deviation; Barium, detrital; Barium, lithogenic; Barium, lithogenic, standard deviation; Barium, standard deviation; Calculated; Calculated, preservation corrected; Calculated, saturation corrected; DEPTH, sediment/rock; Elevation of event; Event label; ICP-MS, VG-Plasma-Quad ExCell; Identification; INOPEX; Latitude of event; Lithogenic material; Lithogenic material, standard deviation; Location; Longitude of event; MUC; MultiCorer; North Pacific Ocean; Opal, biogenic silica, preservation; Opal, biogenic silica, preservation, standard deviation; Opal, flux; Opal, flux, standard deviation; SO202/1; SO202/1_01-3; SO202/1_02-4; SO202/1_03-4; SO202/1_04-3; SO202/1_05-3; SO202/1_06-2; SO202/1_08-1; SO202/1_09-2; SO202/1_23-4; SO202/1_24-2; SO202/1_25-1; SO202/1_26-1; SO202/1_27-1; SO202/1_28-1; SO202/1_29-5; SO202/1_31-5; SO202/1_32-5; SO202/1_33-5; SO202/1_34-4; SO202/1_36-6; SO202/1_37-1; SO202/1_38-1; SO202/1_39-2; SO202/1_40-2; SO202/1_41-3; SO202/1_42-3; SO202/1_45-2; Sonne
    Type: Dataset
    Format: text/tab-separated-values, 504 data points
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  • 8
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    Biogenic opal, biogenic barium, calcium carbonate and U/Th isotope data from core-top sediments of SONNE cruise SO202 (INOPEX) (2014)
    PANGAEA
    In:  Supplement to: Serno, Sascha; Winckler, Gisela; Anderson, Robert F; Hayes, Christopher T; Ren, Haojia Abby; Gersonde, Rainer; Haug, Gerald H (2014): Using the natural spatial pattern of marine productivity in the Subarctic North Pacific to evaluate paleoproductivity proxies. Paleoceanography, 29(5), 438-453, https://doi.org/10.1002/2013PA002594
    Details
    Publication Date: 2023-10-05
    Description: Sedimentary proxies used to reconstruct marine productivity suffer from variable preservation and are sensitive to factors other than productivity. Therefore, proxy calibration is warranted. Here we map the spatial patterns of two paleoproductivity proxies, biogenic opal and barium fluxes, from a set of core-top sediments recovered in the Subarctic North Pacific. Comparisons of the proxy data with independent estimates of primary and export production, surface water macronutrient concentrations and biological pCO2 drawdown indicate that neither proxy shows a significant correlation with primary or export productivity for the entire region. Biogenic opal fluxes, when corrected for preservation using 230Th-normalized accumulation rates, show a good correlation with primary productivity along the volcanic arcs (tau = 0.71, p = 0.0024) and with export productivity throughout the western Subarctic North Pacific (tau = 0.71, p = 0.0107). Moderate and good correlations of biogenic barium flux with export production (tau = 0.57, p = 0.0022) and with surface water silicate concentrations (tau = 0.70, p = 0.0002) are observed for the central and eastern Subarctic North Pacific. For reasons unknown, however, no correlation is found in the western Subarctic North Pacific between biogenic barium flux and the reference data. Nonetheless, we show that barite saturation, uncertainty in the lithogenic barium corrections and problems with the reference datasets are not responsible for the lack of a significant correlation between biogenic barium flux and the reference data. Further studies evaluating the factors controlling the variability of the biogenic constituents in the sediments are desirable in this region.
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 9
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    (Tab 2) Salt-corrected He isotope, U/Th isotope, Calcium carbonate, biogenic opal and rare earth element concentrations measured on core-top sediments during SONNE cruise SO202 (INOPEX) (2014)
    PANGAEA
    Details
    Publication Date: 2023-10-05
    Keywords: Alkaline extraction and molbydate blue spectrophotometry; Bering Sea; Calcium carbonate; Calcium carbonate, standard deviation; Calculated; Cerium; Coulometer CM5012 CO2; DEPTH, sediment/rock; Dysprosium; Elevation of event; Erbium; Europium; Event label; Gadolinium; Helium-4, terrestrial; Helium-4, terrestrial, standard deviation; Holmium; ICP-MS, VG Elemental Axiom; ICP-MS, VG-Plasma-Quad ExCell; INOPEX; Lanthanum; Latitude of event; Longitude of event; Lutetium; MUC; MultiCorer; Neodymium; North Pacific Ocean; Opal, biogenic silica; Opal, biogenic silica, standard deviation; Praseodymium; Samarium; SO202/1; SO202/1_01-3; SO202/1_02-4; SO202/1_03-4; SO202/1_04-3; SO202/1_05-3; SO202/1_06-2; SO202/1_08-1; SO202/1_09-2; SO202/1_10-2; SO202/1_11-1; SO202/1_12-2; SO202/1_13-4; SO202/1_14-5; SO202/1_15-4; SO202/1_18-1; SO202/1_19-5; SO202/1_21-2; SO202/1_22-1; SO202/1_23-4; SO202/1_24-2; SO202/1_25-1; SO202/1_26-1; SO202/1_27-1; SO202/1_28-1; SO202/1_29-5; SO202/1_31-5; SO202/1_32-5; SO202/1_33-5; SO202/1_34-4; SO202/1_36-6; SO202/1_37-1; SO202/1_38-1; SO202/1_39-2; SO202/1_40-2; SO202/1_41-3; SO202/1_42-3; SO202/1_45-2; Sonne; Terbium; Thorium-230; Thorium-230, flux normalized; Thorium-230, flux normalized, standard deviation; Thorium-230, standard deviation; Thorium-230 excess, decay-corrected; Thorium-230 excess, decay-corrected, standard deviation; Thorium-232; Thorium-232, standard deviation; Thulium; Uranium-238; Uranium-238, standard deviation; Ytterbium
    Type: Dataset
    Format: text/tab-separated-values, 1110 data points
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  • 10
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    (Tab 3) Dust contribution to lithogenic fraction and dust flux in core-top sediments during SONNE cruise SO202 (INOPEX) (2014)
    PANGAEA
    Details
    Publication Date: 2023-10-05
    Keywords: DEPTH, sediment/rock; Dust, flux; Dust, flux, standard deviation; Dust contribution to lithogenic fraction; Dust contribution to lithogenic fraction, standard deviation; Elevation of event; Event label; Fine endmember contribution to lithogenic fraction; Fine endmember-derived, flux; Fine endmember-derived, flux, standard deviation; INOPEX; Latitude of event; Longitude of event; MUC; MultiCorer; North Pacific Ocean; SO202/1; SO202/1_01-3; SO202/1_02-4; SO202/1_03-4; SO202/1_04-3; SO202/1_05-3; SO202/1_06-2; SO202/1_08-1; SO202/1_09-2; SO202/1_23-4; SO202/1_24-2; SO202/1_25-1; SO202/1_27-1; SO202/1_28-1; SO202/1_29-5; SO202/1_31-5; SO202/1_32-5; SO202/1_33-5; SO202/1_34-4; SO202/1_36-6; SO202/1_37-1; SO202/1_38-1; SO202/1_39-2; SO202/1_40-2; SO202/1_41-3; SO202/1_42-3; SO202/1_45-2; Sonne
    Type: Dataset
    Format: text/tab-separated-values, 433 data points
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