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  • 2005-2009  (15)
Publikationsart
Schlagwörter
Verlag/Herausgeber
Erscheinungszeitraum
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    Climatic controls on central African hydrology during the past 20,000 years (2005)
    [s.l.] : Nature Publishing Group
    Nature 437 (2005), S. 1003-1006 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Past hydrological changes in Africa have been linked to various climatic processes, depending on region and timescale. Long-term precipitation changes in the regions of northern and southern Africa influenced by the monsoons are thought to have been governed by precessional variations in summer ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/nature03945
    Standort Signatur Einschränkungen Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 2
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    Stable carbon isotopes ratios of n-alkanes of sediment core GeoB9528-3 (2009)
    PANGAEA
    Details
    Publikationsdatum: 2023-06-27
    Schlagwort(e): 313; AGE; DEPTH, sediment/rock; GeoB9528-3; Gravity corer (Kiel type); M65/1; Mass spectrometer ThermoFisher Delta V; Meteor (1986); n-Alkane C29, δ13C; n-Alkane C29, δ13C, standard deviation; n-Alkane C31, δ13C; n-Alkane C31, δ13C, standard deviation; SL
    Materialart: Dataset
    Format: text/tab-separated-values, 548 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 3
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    Stable oxygen and carbon isotopes ratios of Cibicidoides wuellerstorfi of sediment core GeoB9528-3 (2009)
    PANGAEA
    Details
    Publikationsdatum: 2023-06-27
    Schlagwort(e): 313; AGE; Cibicidoides wuellerstorfi, δ13C; Cibicidoides wuellerstorfi, δ18O; DEPTH, sediment/rock; GeoB9528-3; Gravity corer (Kiel type); M65/1; Mass spectrometer ThermoFisher Delta V; Meteor (1986); SL
    Materialart: Dataset
    Format: text/tab-separated-values, 618 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 4
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    Stable oxygen and carbon isotopes ratios of sediment core GeoB9528-3 (2009)
    PANGAEA
    In:  Supplement to: Castañeda, Isla S; Mulitza, Stefan; Schefuß, Enno; Lopes dos Santos, Raquel A; Sinninghe Damsté, Jaap S; Schouten, Stefan (2009): Wet phases in the Sahara/Sahel region and human migration patterns in North Africa. Proceedings of the National Academy of Sciences of the United States of America, 106(48), 20159-20163, https://doi.org/10.1073/pnas.0905771106
    Details
    Publikationsdatum: 2023-06-27
    Beschreibung: The carbon isotopic composition of individual plant leaf waxes (a proxy for C3 vs. C4 vegetation) in a marine sediment core collected from beneath the plume of Sahara-derived dust in northwest Africa reveals three periods during the past 192,000 years when the central Sahara/Sahel contained C3 plants (likely trees), indicating substantially wetter conditions than at present. Our data suggest that variability in the strength of Atlantic meridional overturning circulation (AMOC) is a main control on vegetation distribution in central North Africa, and we note expansions of C3 vegetation during the African Humid Period (early Holocene) and within Marine Isotope Stage (MIS) 3 (approx. 50-45 ka) and MIS 5 (approx. 120-110 ka). The wet periods within MIS 3 and 5 coincide with major human migration events out of sub-Saharan Africa. Our results thus suggest that changes in AMOC influenced North African climate and, at times, contributed to amenable conditions in the central Sahara/Sahel, allowing humans to cross this otherwise inhospitable region.
    Schlagwort(e): 313; GeoB9528-3; Gravity corer (Kiel type); M65/1; Meteor (1986); SL
    Materialart: Dataset
    Format: application/zip, 2 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 5
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    Pollen counts of sediment core GeoB9503-5 (2009)
    PANGAEA
    Details
    Publikationsdatum: 2023-07-10
    Schlagwort(e): 288; Acacia; AGE; Algae; Amaranthaceae/Chenopodiaceae; Anonaceae; Artemisia; Asteroideae; Boreria spermacore; Boscia-type; Butyrospermum; Canthium subcordatum; Center for Marine Environmental Sciences; Clematis; Counting, palynology; Cuviera; Cyperaceae; DEPTH, sediment/rock; Euphorbia-type; Fraximus; Galium; GeoB9503-5; Gramineae; Gravity corer (Kiel type); Indeterminata; Indigofera; M65/1; MARUM; Meteor (1986); Mimosa; Mitracarpus; Olea; Phoenix; Pinus; Pliostigma; Pollen, total; Pollen indeterminata; Pterocarpus; Rhizophora; Rubeacea; SL; Spores; Stereospermum; Tamarindus; Typha; Uapaca; Vernonia; Zizyphus
    Materialart: Dataset
    Format: text/tab-separated-values, 2184 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 6
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    Organic-walled dinoflagellate cyst counts of sediment core GeoB9503-5 (2009)
    PANGAEA
    Details
    Publikationsdatum: 2023-11-28
    Schlagwort(e): 288; AGE; Bitectatodinium spongium; Bitectatodinium spp.; Brigantedinium spp.; Center for Marine Environmental Sciences; Counting, palynology; DEPTH, sediment/rock; Dinoflagellate cyst; Dinoflagellates, total; Dinoflagellate spp.; Diplopelta symmetrica; Dubridinium spp.; Echinidinium aculeatum; Echinidinium delicatum; Echinidinium granulatum; Echinidinium spp.; Echinidinium transparantum; Echinidinium zonneveldiae; GeoB9503-5; Gravity corer (Kiel type); Impagidinium aculeatum; Leujeunocysta oliva; Leujeunocysta sabrina; Lingulodinium machaerophorum; M65/1; MARUM; Meteor (1986); Nematosphaeropsis labyrinthus; Operculodinium centrocarpum; Operculodinium israelianum; Pentaspharsodinium dalei; Polykrikos kofoidii; Polykrikos schwarzii; Polysphaeridium zoharyi; Protoperidinium americanum; Protoperidinium cf. americanum; Protoperidinium monospinum; Protoperidinium spp.; Quinquecuspis concreta; Selenopemphix nephroides; Selenopemphix quanta; SL; Spiniferites bentori; Spiniferites bulloides; Spiniferites hyperacanthus; Spiniferites membranaceus; Spiniferites mirabilis; Spiniferites pachydermus; Spiniferites ramosus; Spiniferites spp.; Stelladinium stellatum; Trinovantedinium applanatum; Tuberculodinium vancampoae; Votadinium calvum; Votadinium spinosum; Xandarodinium xanthum; Zygabikodinium lenticulatum
    Materialart: Dataset
    Format: text/tab-separated-values, 2912 data points
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    DATA PANGAEA
  • 7
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    (Table 1) Age determination of sediment core GeoB6518-1 (2005)
    PANGAEA
    Details
    Publikationsdatum: 2024-02-02
    Schlagwort(e): Age, 14C AMS; Age, 14C calibrated, CALIB 4.4 (Stuiver et al., 2003); Age, dated; Age, dated, error to older; Age, dated, error to younger; Age, maximum/old; Age, minimum/young; Calendar age; Center for Marine Environmental Sciences; Congo Fan; DEPTH, sediment/rock; GeoB6518-1; Gravity corer (Kiel type); M47/3; MARUM; Meteor (1986); Sample code/label; SL
    Materialart: Dataset
    Format: text/tab-separated-values, 96 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 8
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    Deglacial-Holocene records of central African climate and SST in the tropical Atlantik of sediment core GeoB6518-1 (2005)
    PANGAEA
    Details
    Publikationsdatum: 2024-02-02
    Schlagwort(e): AGE; Alkenone, unsaturation index UK'37; Calculated; Calculated, see reference(s); Calculated from C37 alkenones (Prahl & Wakeham, 1987); Center for Marine Environmental Sciences; Congo Fan; DEPTH, sediment/rock; GeoB6518-1; Globigerinoides ruber white, δ18O; Gravity corer (Kiel type); M47/3; MARUM; Mass spectrometer Finnigan MAT 251; Mass spectrometer Finnigan MAT 252; Mass spectrometer Thermo Electron Delta plus XL; Meteor (1986); n-Alkane C29, δ13C; n-Alkane C29, δ13C, standard deviation; n-Alkane C29, δD; n-Alkane C29, δD, standard deviation; Sea surface temperature, annual mean; SL; δ18O, water
    Materialart: Dataset
    Format: text/tab-separated-values, 989 data points
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  • 9
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    (Table 1) Maximum wind speed, wind direction, altitude, and pressure of dust samples, measured by weather balloons from the Deutsche Wetterdienst onboard FS Meteor during cruise M41/1 (2005)
    PANGAEA
    Details
    Publikationsdatum: 2024-02-02
    Schlagwort(e): AEOLD; Aeolian dust sample; ALTITUDE; Center for Marine Environmental Sciences; D1; D10; D11; D12; D13; D14; D15; D16; D17; D18; D19; D20; D21; D22; D23; D24; D25; D3; D4; D5; D6; D7; D8; D9; Event label; GeoB; Geosciences, University of Bremen; LATITUDE; Latitude 2; LONGITUDE; Longitude 2; M41/1; M41/1_D1; M41/1_D10; M41/1_D11; M41/1_D12; M41/1_D13; M41/1_D14; M41/1_D15; M41/1_D16; M41/1_D17; M41/1_D18; M41/1_D19; M41/1_D2; M41/1_D20; M41/1_D21; M41/1_D22; M41/1_D23; M41/1_D24; M41/1_D25; M41/1_D3; M41/1_D4; M41/1_D5; M41/1_D6; M41/1_D7; M41/1_D8; M41/1_D9; MARUM; Meteor (1986); Pressure, at given altitude; Time in hours; Weather Balloon; Wind direction; Wind speed
    Materialart: Dataset
    Format: text/tab-separated-values, 132 data points
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    DATA PANGAEA
  • 10
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    Grain-size distributions of atmospheric dust samples along a transect off the West African coast (2005)
    PANGAEA
    Details
    Publikationsdatum: 2024-02-02
    Schlagwort(e): AEOLD; Aeolian dust sample; ALTITUDE; Beckman Coulter Laser diffraction particle size analyzer LS 230; Center for Marine Environmental Sciences; D1; D10; D11; D12; D13; D14; D15; D16; D17; D18; D19; D20; D21; D23; D24; D25; D3; D4; D5; D6; D7; D8; D9; Event label; GeoB; Geosciences, University of Bremen; Latitude 2; Longitude 2; M41/1; M41/1_D1; M41/1_D10; M41/1_D11; M41/1_D12; M41/1_D13; M41/1_D14; M41/1_D15; M41/1_D16; M41/1_D17; M41/1_D18; M41/1_D19; M41/1_D2; M41/1_D20; M41/1_D21; M41/1_D23; M41/1_D24; M41/1_D25; M41/1_D3; M41/1_D4; M41/1_D5; M41/1_D6; M41/1_D7; M41/1_D8; M41/1_D9; MARUM; Meteor (1986); Size fraction 0.412-0.375 µm; Size fraction 0.452-0.412 µm; Size fraction 0.496-0.452 µm; Size fraction 0.545-0.496 µm; Size fraction 0.598-0.545 µm; Size fraction 0.656-0.598 µm; Size fraction 0.721-0.656 µm; Size fraction 0.791-0.721 µm; Size fraction 0.868-0.791 µm; Size fraction 0.948-1.041 mm; Size fraction 0.953-0.868 µm; Size fraction 1.041-1.143 mm; Size fraction 1.047-0.953 µm; Size fraction 1.143-1.255 mm; Size fraction 1.149-1.047 µm; Size fraction 1.255-1.377 mm; Size fraction 1.261-1.149 µm; Size fraction 1.377-1.512 mm; Size fraction 1.384 -1.261 µm; Size fraction 1.512-1.660 mm; Size fraction 1.520-1.384 µm; Size fraction 1.668-1.520 µm; Size fraction 1.822-1.660 mm; Size fraction 1.832-1.668 µm; Size fraction 10.78-9.818 µm; Size fraction 101.1-92.09 µm; Size fraction 11.83-10.78 µm; Size fraction 111.0-101.1 µm; Size fraction 12.99-11.83 µm; Size fraction 121.8-111.0 µm; Size fraction 133.7-121.8 µm; Size fraction 14.26-12.99 µm; Size fraction 146.8-133.7 µm; Size fraction 15.65-14.26 µm; Size fraction 161.2-146.8 µm; Size fraction 17.18-15.65 µm; Size fraction 176.8-161.2 µm; Size fraction 18.86-17.18 µm; Size fraction 194.2-176.8 µm; Size fraction 2.000-1.822 mm; Size fraction 2.010-1.832 µm; Size fraction 2.207-2.010 µm; Size fraction 2.423-2.207 µm; Size fraction 2.660-2.423 µm; Size fraction 2.920-2.660 µm; Size fraction 20.70-18.86 µm; Size fraction 213.2-194.2 µm; Size fraction 213.2-234.1 µm; Size fraction 22.73-20.70 µm; Size fraction 234.1-256.8 µm; Size fraction 24.95-22.73 µm; Size fraction 256.8-282.1 µm; Size fraction 27.38-24.95 µm; Size fraction 282.1-309.6 µm; Size fraction 3.205-2.920 µm; Size fraction 3.519-3.205 µm; Size fraction 3.862-3.519 µm; Size fraction 30.07-27.38 µm; Size fraction 309.6-339.8 µm; Size fraction 33.01-30.07 µm; Size fraction 339.8-373.1 µm; Size fraction 36.24-33.01 µm; Size fraction 373.1-409.6 µm; Size fraction 39.77-36.24 µm; Size fraction 4.240-3.863 µm; Size fraction 4.655-4.240 µm; Size fraction 409.6-449.7 µm; Size fraction 43.67-39.78 µm; Size fraction 449.7-493.6 µm; Size fraction 47.94-43.67 µm; Size fraction 493.6-541.9 µm; Size fraction 5.110-4.655 µm; Size fraction 5.610-5.110 µm; Size fraction 52.62-47.94 µm; Size fraction 541.9-594.9 µm; Size fraction 57.77-52.62 µm; Size fraction 594.9-653.0 µm; Size fraction 6.158-5.611 µm; Size fraction 6.761-6.158 µm; Size fraction 63.41-57.77 µm; Size fraction 653.0-716.9 µm; Size fraction 69.62-63.41 µm; Size fraction 7.421-6.760 µm; Size fraction 716.9-786.9 µm; Size fraction 76.42-69.61 µm; Size fraction 786.9-863.9 µm; Size fraction 8.147-7.421 µm; Size fraction 8.943-8.147 µm; Size fraction 83.89-76.42 µm; Size fraction 863.9-948.2 µm; Size fraction 9.818-8.943 µm; Size fraction 92.09-83.90 µm
    Materialart: Dataset
    Format: text/tab-separated-values, 2256 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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