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  • 2010-2014  (31)
  • 2005-2009  (23)
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  • 1
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    (Table 1) Tuning points used to transfer the MD02-2588 records to the EDC3/EDML1 timescale (2013)
    PANGAEA
    Details
    Publication Date: 2023-03-02
    Keywords: Age, comment; Age, error; Age, maximum/old; Age, minimum/young; Age model; CALYPSO; Calypso Corer; Comment; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Marion Dufresne (1995); MD02-2588; MD02-2588Q; MD128; Southern Ocean; SWAF
    Type: Dataset
    Format: text/tab-separated-values, 120 data points
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  • 2
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    Late Pliocene age models of Agulhas Plateau sediment cores (2013)
    PANGAEA
    In:  Supplement to: Marino, Gianluca; Zahn, Rainer; Ziegler, Martin; Purcell, Conor; Knorr, Gregor; Hall, Ian R; Ziveri, Patrizia; Elderfield, Henry (2013): Agulhas salt-leakage oscillations during abrupt climate changes of the Late Pleistocene. Paleoceanography, 28(3), 599-606, https://doi.org/10.1002/palo.20038
    Details
    Publication Date: 2023-01-13
    Description: An ensemble of new, high-resolution records of surface ocean hydrography from the Indian-Atlantic oceanic gateway, south of Africa, demonstrates recurrent and high-amplitude salinity oscillations in the Agulhas Leakage area during the penultimate glacial-interglacial cycle. A series of millennial-scale salinification events, indicating strengthened salt leakage into the South Atlantic, appear to correlate with abrupt changes in the North Atlantic climate and Atlantic Meridional Overturning Circulation (AMOC). This interhemispheric coupling, which plausibly involved changes in the Hadley Cell and midlatitude westerlies that impacted the interocean transport at the tip of Africa, suggests that the Agulhas Leakage acted as a source of negative buoyancy for the perturbed AMOC, possibly aiding its return to full strength. Our finding points to the Indian-to-Atlantic salt transport as a potentially important modulator of the AMOC during the abrupt climate changes of the Late Pleistocene.
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 3
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    (Table 2) Tuning points used to transfer the new EDC3/EDML1 chronology of core MD02-2588 to nearby core MD96-2080 (2013)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Age, comment; Age, error; Age, maximum/old; Age, minimum/young; Age model; CALYPSO; Calypso Corer; Comment; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; IMAGES II; Marion Dufresne (1995); MD105; MD96-2080; MD962080, ABS; Southern Agulhas Bank
    Type: Dataset
    Format: text/tab-separated-values, 96 data points
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  • 4
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    (Table DS1) Benthic foraminifera in sediment core MD02-2589 (2007)
    PANGAEA
    Details
    Publication Date: 2023-07-09
    Keywords: Adelosina laevigata; Adelosina sp.; AGE; Alabaminella weddellensis; Amphicoryna scalaris; Anomalinoides sp.; Articulina sp.; Astacolus sp.; Astrononion sp.; Bolivina pseudoplicata; Bolivinellina translucens; Brizalina dilatata; Brizalina minima; Brizalina sp.; Brizalina spathulata; Brizalina striatula; Brizalina subspinescens; Brizalina variabilis; Buccella frigida; Bulimina elongata; Bulimina marginata; Bulimina mexicana; Bulimina rostrata; Bulimina sp.; CALYPSO; Calypso Corer; Cassidulina carinata; Cassidulina obtusa; Cassidulina sp.; Chilostomella oolina; Cibicides refulgens; Cibicides sp.; Cibicidoides pachyderma; Cibicidoides robertsonianus; Cibicidoides sp.; Counting; Counting, foraminifera; Counting, foraminifera, benthic; Counting 〉125 µm fraction; Counting 〉150 µm fraction; Counting 〉63 µm fraction; Cribrostomoides subglobosum; Cushmanina striatopunctata; Dentalina sp.; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Discorbinella bertheloti; Discorbinella sp.; Discorbis sp.; Eggerella bradyi; Epistominella exigua; Epistominella rugosa; Epistominella sp.; Epistominella vitrea; Eponides sp.; Estimated; Evolvocassidulina orientalis; Evolvocassidulina sp.; Evolvocassidulina tenuis; Evolvocassidulinoides bradyi; Favulina hexagona; Favulina squamosa; Fissurina lucida; Fissurina radiata; Fissurina semimarginata; Fissurina sp.; Fontbotia wuellerstorfi; Foraminifera, benthic; Foraminifera, benthic, other; Francesita advena; Fursenkoina sp.; Glabratellina sp.; Globobulimina sp.; Globocassidulina sp.; Globocassidulina subglobosa; Globulina gibba; Globulina sp.; Gyroidinoides cf. polius; Gyroidinoides lamarckiana; Gyroidinoides neosoldanii; Gyroidinoides sp.; Hoeglundina elegans; Homaloedra williamsoni; Hormosina sp.; Hyalinonetrium clavatum; Ioanella tumidula; Karreriella bradyi; Lagena nebulosa; Lagena semistriata; Lagena sp.; Lagena striata; Lagena substriata; Lagenosolenia seguenziana; Laticarinina pauperata; Lenticulina sp.; Lobatula lobatula; Marion Dufresne (1995); Martinottiella communis; MD02-2589; MD128; Melonis barleeanus; Melonis pompilioides; Melonis sphaeroides; Melonis zaandamae; Nodosaria doliolaris; Nodosaria sp.; Nonionella iridea; Nonionoides sp.; Nonion sp.; Oolina globosa; Oolina globosa var. setosa; Oolina ovum; Oolina sp.; Oridorsalis umbonatus; Osangularia lens; Palliolatella orbygniana; Palliolatella sp.; Parafissurina lateralis; Parafissurina sp.; Patellina corrugata; Planularia sp.; Pleurostomella sp.; Polymorphina sp.; Procerolagena gracilis; Pseudoolina multicostata; Pseudoolina sp.; Pullenia bulloides; Pullenia cf. subcarinata; Pullenia osloensis; Pullenia quinqueloba; Pullenia salisburyi; Pullenia sp.; Pullenia subsphaerica; Pyrgo depressa; Pyrgo murrhina; Pyrgo oblonga; Pyrgo serrata; Pyrgo subsphaerica; Quinqueloculina lamarckiana; Quinqueloculina lata; Quinqueloculina seminulum; Quinqueloculina sp.; Rosalina globularis; Rotalomorphina sp.; Rutherfordoides tessellata; Sigmoilinita distorta; Sigmoilinita tenuis; Sigmoilopsis schlumbergeri; Siphotextularia sp.; Southern Ocean; Spirosigmoilinita pusilla; Stainforthia concava; Stainforthia fusiformis; Stainforthia sp.; SWAF; Tosaia hanzawai; Trifarina bradyi; Triloculina sp.; Triloculina tricarinata; Triloculina trigonula; Trochammina sp.; Uvigerina peregrina; Uvigerina proboscidea; Valvalabamina sp.; Valvulineria minuta
    Type: Dataset
    Format: text/tab-separated-values, 19116 data points
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  • 5
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    (Table S1) Nd isotope ratios of sediment core MD99-2198 (2013)
    PANGAEA
    Details
    Publication Date: 2023-12-18
    Keywords: 6bis2G; AGE; CALYPSO; Calypso Corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; IMAGES V; Marion Dufresne (1995); MD114; MD99-2198; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, error; Tobago basin; ε-Neodymium; ε-Neodymium, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 78 data points
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  • 6
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    (Table S3) Radionuclides of sediment core RC24-1 (2013)
    PANGAEA
    Details
    Publication Date: 2023-12-18
    Keywords: Accumulation rate, mass; Accumulation rate, standard deviation; AGE; DEPTH, sediment/rock; Opal, biogenic silica; PC; Piston corer; RC24; RC24-1; Robert Conrad; Uranium, authigenic; Uranium, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 60 data points
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  • 7
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    (Table S2) Si isotope ratios of sediment core MD99-2198 (2013)
    PANGAEA
    Details
    Publication Date: 2023-12-18
    Keywords: 6bis2G; AGE; CALYPSO; Calypso Corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; IMAGES V; Marion Dufresne (1995); MD114; MD99-2198; Silicate; Tobago basin; δ30Si, silicic acid
    Type: Dataset
    Format: text/tab-separated-values, 60 data points
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  • 8
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    Geochemistry of tropical Atlantic sediments of Marine Isotope Stage 4 (2013)
    PANGAEA
    In:  Supplement to: Griffiths, James D; Barker, Stephen; Hendry, Katharine R; Thornalley, David J R; van de Flierdt, Tina; Hall, Ian R; Anderson, Robert F (2013): Evidence of silicic acid leakage to the tropical Atlantic via Antarctic Intermediate Water during Marine Isotope Stage 4. Paleoceanography, 28(2), 307-318, https://doi.org/10.1002/palo.20030
    Details
    Publication Date: 2023-12-18
    Description: Antarctic Intermediate Water (AAIW) and Subantarctic Mode Water (SAMW) are the main conduits for the supply of dissolved silicon (silicic acid) from the deep Southern Ocean (SO) to the low-latitude surface ocean and therefore have an important control on low-latitude diatom productivity. Enhanced supply of silicic acid by AAIW (and SAMW) during glacial periods may have enabled tropical diatoms to outcompete carbonate-producing phytoplankton, decreasing the relative export of inorganic to organic carbon to the deep ocean and lowering atmospheric pCO2. This mechanism is known as the "silicic acid leakage hypothesis" (SALH). Here we present records of neodymium and silicon isotopes from the western tropical Atlantic that provide the first direct evidence of increased silicic acid leakage from the Southern Ocean to the tropical Atlantic within AAIW during glacial Marine Isotope Stage 4 (~60-70 ka). This leakage was approximately coeval with enhanced diatom export in the NW Atlantic and across the eastern equatorial Atlantic and provides support for the SALH as a contributor to CO2 drawdown during full glacial development.
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 9
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    (Table S1) Age determination of sediment core MD02-2589 (2007)
    PANGAEA
    Details
    Publication Date: 2023-11-04
    Keywords: Age, 14C AMS; Age, 14C milieu/reservoir corrected; Age, dated; Age, dated standard deviation; Calendar age; Calendar age, standard deviation; CALYPSO; Calypso Corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Marion Dufresne (1995); MD02-2589; MD128; Southern Ocean; SWAF
    Type: Dataset
    Format: text/tab-separated-values, 24 data points
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  • 10
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    Mg/Ca and stable oxygen isotope ratios of Uvigerina spp. from the Southern Ocean (2010)
    PANGAEA
    In:  Supplement to: Elderfield, Henry; Greaves, Mervyn; Barker, S; Hall, Ian R; Tripati, Aradhna K; Ferretti, Patrizia; Crowhurst, Simon J; Booth, Linda; Daunt, C (2010): A record of bottom water temperature and seawater d18O for the Southern Ocean over the past 440kyr based on Mg/Ca of benthic foraminiferal Uvigerina spp. Quaternary Science Reviews, 29(1-2), 160-169, https://doi.org/10.1016/j.quascirev.2009.07.013
    Details
    Publication Date: 2024-01-09
    Description: The sensitivity to temperature of Mg/Ca ratios in the shallow-infaunal benthic foraminifera Uvigerina spp. has been assessed. Core-top calibrations over ~1-20 °C show a range in sensitivity of 0.065-0.084 mmol/mol/°C but few data are available spanning the temperature range anticipated in deep-sea records over glacial-interglacial cycles. In contrast to epibenthic foraminiferal species, carbonate ion saturation appears not to affect Mg/Ca significantly. A method based on estimating the ratio of the temperature sensitivity of foraminiferal Mg/Ca to that of d18Ocalcite shows that sensitivity for Mg/Ca at the high end of the observed core-top range (~0.1 mmol/mol/°C) is required for consistency with LGM-Holocene differences in each property as constrained by independent proxy data. This is supported by a Mg/Ca record for Uvigerina spp. generated for the Southern Ocean over the past 440,000 years from Ocean Drilling Program Site 1123 (Chatham Rise, New Zealand). The record shows variability that correlates with climate oscillations. The LGM deep ocean temperature derived from the Mg/Ca record is -1.1 ± 0.3 °C. Transformation to temperature allows estimates to be made of changes in bottom water temperature and seawater d18O and comparison made with literature records. Analysis reveals a ~2.5-kyr lead in the record of temperature over calcite d18O and a longer lead over seawater d18O. This is a reflection of larger phase offsets at eccentricity periods; phase offsets at tilt and precession are within error zero.
    Keywords: Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 2 datasets
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