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  • 1
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    Stable isotope ratios of foraminifera, grain-size distribution and magnetic susceptibility record of sediment core MD99-2339
    PANGAEA
    In:  Supplement to: Voelker, Antje H L; Lebreiro, Susana Martin; Schönfeld, Joachim; Cacho, Isabel; Erlenkeuser, Helmut; Abrantes, Fatima F (2006): Mediterranean outflow strengthening during northern hemisphere coolings: A salt source for the glacial Atlantic? Earth and Planetary Science Letters, 245(1-2), 39-55, https://doi.org/10.1016/j.epsl.2006.03.014
    Details
    Publication Date: 2023-06-27
    Description: High-resolution grain size and magnetic susceptibility records from the eastern Gulf of Cadiz (site MD99-2339; 1170m water depth) reveal contourites formed by the Mediterranean Outflow (MOW) during the last 47kyr BP. Oscillations in the MOW's intensity occurred in phase with Greenland temperature variations with a stronger outflow during northern hemisphere coolings such as Dansgaard-Oeschger stadials, Heinrich events, and the Younger Dryas. Benthic delta13C data implies the Western Mediterranean Deep Water as one of the main sources feeding the outflow current, while differential changes in the properties of the Mediterranean source and entrained North Atlantic Central Water largely control the MOW's strength. Detailed studies for Heinrich events 1, 4 and 5 show that the flow strength peaked only when subtropical surface waters prevailed in the eastern Gulf of Cadiz, while incursions of icebergs and subpolar surface water were not favorable for the MOW's intensification. As the MOW was strong when the Atlantic's thermohaline circulation (THC) was weakened, the heat and salt injected by the MOW into the intermediate North Atlantic waters might have preconditioned the THC to switch from the stadial to the interstadial mode.
    Keywords: 94a; CALYPSO; Calypso Corer; Gulf of Cádiz, Atlantic Ocean; IMAGES; IMAGES V; International Marine Global Change Study; Marion Dufresne (1995); MD114; MD99-2339
    Type: Dataset
    Format: application/zip, 13 datasets
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  • 2
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    Paleotemperature and productivity reconstruction of sediment core D11957P on the Iberian Margin
    PANGAEA
    In:  Supplement to: Lebreiro, Susana Martin; Moreno, J C; Abrantes, Fatima F; Pflaumann, Uwe (1997): Productivity and paleoceanographic implications on the Tore Seamount (Iberian Margin) during the last 225 kyr: Foraminiferal evidence. Paleoceanography, 12(5), 718-727, https://doi.org/10.1029/97PA01748
    Details
    Publication Date: 2023-06-27
    Description: Foraminifera counts and climatic assemblages from the Tore Seamount are used to approach the glacial and interglacial changes in temperature and productivity on the Iberian Margin over the last 225 kyr. Chronostratigraphy is based on Globigerinoides ruber and Globigerina bulloides oxygen isotopes and supported by foraminifera and carbonate stadial fluctuations. Foraminifera indicate cooling from late interglacial stage 5 to the beginning of Termination I (TI). Neogloboquadnna pachyderma-s reflects cold conditions during glacial stages 4-2. In contrast, glacial stage 6 is dominated by warmer N. pachyderma-d and dutertrei and a restricted arctic assemblage. Past sea surface temperatures confirm the general cooling, reaching 4.3°C (SIMMAX.28) during stage 2. Multiple productivity proxies such as organic carbon, productivity-related foraminifera, and delta13C constrain the changes observed. A productivity increase occurs after interglacial stage 5, enhanced from late glacial stage 3 to TI Present-day satellite-detected phytoplankton plumes off Portugal would have accounted in the past glacial stages for the general productivity increase over the Tore. On top of this, welldefined peaks of organic carbon and productivity-related foraminifera correspond with Heinrich events 1-4.
    Keywords: D11957P; D187; Discovery (1962); PC; Piston corer
    Type: Dataset
    Format: application/zip, 5 datasets
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  • 3
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    Stable carbon and oxygen isotope ratios of planktonic foraminifera from sediment core MD99-2339 (2010)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: 94a; CALYPSO; Calypso Corer; DEPTH, sediment/rock; Globigerina bulloides, δ13C; Globigerina bulloides, δ18O; Globigerinoides ruber white, δ13C; Globigerinoides ruber white, δ18O; Gulf of Cádiz, Atlantic Ocean; IMAGES; IMAGES V; International Marine Global Change Study; Isotope ratio mass spectrometry; Marion Dufresne (1995); Mass spectrometer Finnigan MAT 251; MD114; MD99-2339
    Type: Dataset
    Format: text/tab-separated-values, 1326 data points
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  • 4
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    Relative abundances of planktonic foraminifera in sediment core MD99-2339 (2010)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: 94a; AGE; CALYPSO; Calypso Corer; Counting 〉150 µm fraction; DEPTH, sediment/rock; Foraminifera, planktic, other; Globigerina bulloides; Globigerina calida; Globigerina digitata; Globigerina falconensis; Globigerina humilis; Globigerina quinqueloba; Globigerina rubescens; Globigerinella aequilateralis; Globigerinita glutinata; Globigerinita uvula; Globigerinoides ruber pink; Globigerinoides ruber white; Globigerinoides sacculifer; Globigerinoides tenellus; Globigerinoides trilobus; Globoquadrina conglomerata; Globorotalia crassaformis; Globorotalia hirsuta; Globorotalia inflata; Globorotalia scitula; Globorotalia truncatulinoides; Globorotalia truncatulinoides dextral; Globorotalia truncatulinoides sinistral; Gulf of Cádiz, Atlantic Ocean; IMAGES; IMAGES V; International Marine Global Change Study; Marion Dufresne (1995); MD114; MD99-2339; Neogloboquadrina dutertrei; Neogloboquadrina incompta; Neogloboquadrina pachyderma sinistral; Orbulina universa; Pulleniatina obliquiloculata
    Type: Dataset
    Format: text/tab-separated-values, 13340 data points
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  • 5
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    (Table 1) Sedimentology of core D11957P
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Clay, mass netto; Counting 〉125 µm fraction; Counting 〉63 µm fraction; D11957P; D187; DEPTH, sediment/rock; Discovery (1962); Foraminifera, benthic; Foraminifera, planktic indeterminata; Grain size, sieving/settling tube; PC; Piston corer; Sand; Sand, mass netto; Silt; Silt, mass netto; Size fraction 〈 0.002 mm, clay; Uvigerina sp.
    Type: Dataset
    Format: text/tab-separated-values, 675 data points
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  • 6
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    (Table 4) Calcium carbonate and total organic carbon content of sediment core D11957P
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Calcium carbonate; Carbon, organic, total; D11957P; D187; DEPTH, sediment/rock; Discovery (1962); Element analyser CNS, Carlo Erba NA1500; PC; Piston corer
    Type: Dataset
    Format: text/tab-separated-values, 184 data points
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  • 7
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    (Table 5) Stable isotopes of planktonic foraminifera from sediment core D11957P
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: D11957P; D187; DEPTH, sediment/rock; Discovery (1962); Globigerina bulloides, δ13C; Globigerina bulloides, δ18O; Globigerinoides ruber white, δ13C; Globigerinoides ruber white, δ18O; Mass spectrometer VG SIRA 24; PC; Piston corer
    Type: Dataset
    Format: text/tab-separated-values, 250 data points
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  • 8
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    (Fig. 3) Age model of sediment core D11957P
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Age model; Age model, SPECMAP chronology, Imbrie et al. (1984); D11957P; D187; DEPTH, sediment/rock; Discovery (1962); Isotopic event; PC; Piston corer
    Type: Dataset
    Format: text/tab-separated-values, 14 data points
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  • 9
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    (Table 2) Distribution of planktic foraminifers of sediment core D11957P
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Counting 〉150 µm fraction; D11957P; D187; DEPTH, sediment/rock; Discovery (1962); Foraminifera, planktic indeterminata; Globigerina bulloides; Globigerina calida; Globigerina digitata; Globigerina falconensis; Globigerina quinqueloba; Globigerina rubescens; Globigerinella siphonifera; Globigerinita glutinata; Globigerinita iota; Globigerinita uvula; Globigerinoides conglobatus; Globigerinoides quadrilobatus; Globigerinoides ruber white; Globigerinoides sacculifer; Globigerinoides tenellus; Globigerinoides trilobus trilobus; Globorotalia crassaformis; Globorotalia hirsuta; Globorotalia inflata; Globorotalia scitula; Globorotalia truncatulinoides dextral; Globorotalia truncatulinoides sinistral; Neogloboquadrina dutertrei; Neogloboquadrina pachyderma dextral; Neogloboquadrina pachyderma dextral and dutertrei integrade; Neogloboquadrina pachyderma sinistral; Orbulina bilobata; Orbulina suturalis; Orbulina universa; PC; Piston corer; Pulleniatina obliquiloculata; Turborotalita cristata; Turborotalita humilis
    Type: Dataset
    Format: text/tab-separated-values, 2475 data points
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  • 10
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    (Table 3) Calculated sea surface temperature and paleoproductivity of sediment core D11957P
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Communality; D11957P; D187; DEPTH, sediment/rock; Discovery (1962); Factor 1; Factor 2; Factor 3; Factor 4; Factor 5; Factor 6; Modern analog technique (MAT), SIMMAX28; Paleoproductivity, as carbon, standard deviation; Paleoproductivity, maximum as carbon; Paleoproductivity, minimum as carbon; Paleoproductivity as carbon; PC; Piston corer; Sea surface temperature, summer; Sea surface temperature, summer, standard deviation; Sea surface temperature, summer max; Sea surface temperature, summer min; Sea surface temperature, winter; Sea surface temperature, winter, standard deviation; Sea surface temperature, winter max; Sea surface temperature, winter min; Similarity index; Transfer function FA20, Molfino et al., 1982
    Type: Dataset
    Format: text/tab-separated-values, 1850 data points
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