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  • LIT; Literary studies; MARGO; MARGO_0000; Multiproxy Approach for the Reconstruction of the Glacial Ocean surface  (3)
  • 288; Center for Marine Environmental Sciences; GeoB9503-5; Gravity corer (Kiel type); M65/1; MARUM; Meteor (1986); SL  (2)
  • (Aluminium+Iron)/(Silicon+Potassium+Titanium); 286; Age; AGE; Aluminium; Calcium; Calculated; Depth, composite; DEPTH, sediment/rock; GeoB; GeoB9501-4; Geosciences, University of Bremen; Intercore correlation; Iron; M65/1; Mauritania Canyon; Meteor (1986); MUC; MultiCorer; Potassium; Silicon; Titanium; X-ray fluorescence core scanner (XRF) II, Bremen, (AVAATECH)  (1)
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Keywords
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  • 1
    Publication Date: 2023-05-12
    Keywords: LIT; Literary studies; MARGO; MARGO_0000; Multiproxy Approach for the Reconstruction of the Glacial Ocean surface
    Type: Dataset
    Format: application/vnd.ms-excel, 144 kBytes
    Location Call Number Limitation Availability
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  • 2
    Publication Date: 2023-05-12
    Keywords: LIT; Literary studies; MARGO; MARGO_0000; Multiproxy Approach for the Reconstruction of the Glacial Ocean surface
    Type: Dataset
    Format: application/vnd.ms-excel, 187.5 kBytes
    Location Call Number Limitation Availability
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  • 3
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    PANGAEA
    In:  Supplement to: Waelbroeck, Claire; Mulitza, Stefan; Spero, Howard J; Dokken, Trond; Kiefer, Thorsten; Cortijo, Elsa (2005): A global compilation of Late Holocene planktonic foraminiferal d18O: Relationship between surface water temperature and d18O. Quaternary Science Reviews, 24(7-9), 853-868, https://doi.org/10.1016/j.quascirev.2003.10.014
    Publication Date: 2023-05-12
    Description: We review the different sources of uncertainty affecting the oxygen isotopic composition of planktonic foraminifera and present a global planktonic foraminifera oxygen isotope data set that has been assembled within the MARGO project for the Late Holocene time slice. The data set consists of over 2100 data from recent sediment with thorough age control, that have been checked for internal consistency. We further examine how the oxygen isotopic composition of fossil foraminifera is related to hydrological conditions, based on published results on living foraminifera from plankton tows and cultures. Oxygen isotopic values (delta18O) of MARGO recent fossil foraminifera are 0.2-0.8 per mil higher than those of living foraminifera. Our results show that this discrepancy is related to the stratification of the upper water mass and generally increases at low latitudes. Therefore, as stratification of surface waters and seasonality depends on climatic conditions, the relationship between temperature and delta18O established on fossil foraminifera from recent sediment must be used with caution in paleoceanographic studies. Before models predicting seasonal flux, abundance and delta18O composition of a foraminiferal population in the sediment are available, we recommend studying relative changes in isotopic composition of fossil planktonic foraminifera. These changes primarily record variations in temperature and oxygen isotopic composition of sea water, although part of the changes might reflect modifications of planktonic foraminifera seasonality or depth habitat
    Keywords: LIT; Literary studies; MARGO; MARGO_0000; Multiproxy Approach for the Reconstruction of the Glacial Ocean surface
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Limitation Availability
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  • 4
    Publication Date: 2023-07-10
    Keywords: (Aluminium+Iron)/(Silicon+Potassium+Titanium); 286; Age; AGE; Aluminium; Calcium; Calculated; Depth, composite; DEPTH, sediment/rock; GeoB; GeoB9501-4; Geosciences, University of Bremen; Intercore correlation; Iron; M65/1; Mauritania Canyon; Meteor (1986); MUC; MultiCorer; Potassium; Silicon; Titanium; X-ray fluorescence core scanner (XRF) II, Bremen, (AVAATECH)
    Type: Dataset
    Format: text/tab-separated-values, 378 data points
    Location Call Number Limitation Availability
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  • 5
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    PANGAEA
    Publication Date: 2024-05-27
    Keywords: 288; Center for Marine Environmental Sciences; GeoB9503-5; Gravity corer (Kiel type); M65/1; MARUM; Meteor (1986); SL
    Type: Dataset
    Format: unknown
    Location Call Number Limitation Availability
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  • 6
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    PANGAEA
    In:  Supplement to: Bouimetarhan, Ilham; Dupont, Lydie M; Schefuß, Enno; Mollenhauer, Gesine; Mulitza, Stefan; Zonneveld, Karin A F (2009): Palynological evidence for climatic and oceanic variability off NW Africa during the late Holocene. Quaternary Research, 72(2), 188-197, https://doi.org/10.1016/j.yqres.2009.05.003
    Publication Date: 2024-05-27
    Description: Pollen and organic-walled dinoflagellate cyst assemblages from core GeoB 9503-5 retrieved from the mud-belt ( 50 m water depth) off the Senegal River mouth have been analyzed to reconstruct short-term palaeoceanographic and palaeoenvironmental changes in subtropical NW Africa during the time interval from ca. 4200 to 1200 cal yr BP. Our study emphasizes significant coeval changes in continental and oceanic environments in and off Senegal and shows that initial dry conditions were followed by a strong and rapid increase in humidity between ca. 2900 and 2500 cal yr BP. After ca. 2500 cal yr BP, the environment slowly became drier again as indicated by slight increases in Sahelian savannah and desert elements in the pollen record. Around ca. 2200 cal yr BP, this relatively dry period ended with periodic pulses of high terrigenous contributions and strong fluctuations in fern spore and river plume dinoflagellate cyst percentages as well as in the fluxes of pollen, dinoflagellate cysts, fresh-water algae and plant cuticles, suggesting "episodic flash flood" events of the Senegal River. The driest phase developed after about 2100 cal yr BP.
    Keywords: 288; Center for Marine Environmental Sciences; GeoB9503-5; Gravity corer (Kiel type); M65/1; MARUM; Meteor (1986); SL
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Limitation Availability
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