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  • Center for Marine Environmental Sciences; GeoB; Geosciences, University of Bremen; MARUM  (2)
  • Hochschulschrift  (2)
  • (9Z)-2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyliden)pentadeca-9-ene, per unit mass total organic carbon; 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane, per unit mass total organic carbon; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, per unit mass total organic carbon; Accumulation rate, (9Z)-2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyliden)pentadeca-9-ene; Accumulation rate, 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane; Accumulation rate, 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol; AGE; Alkenone; ArcTrain; Calculated; DEPTH, sediment/rock; Gas chromatography - Mass spectrometry (GC-MS); GC; Gravity corer; IP25; Labrador Sea; Maria S. Merian; Meltwater pulse; MSM12/2; MSM12/2_647-1; MSM12/2-05-01; Phytoplankton biomarker Brassicasterol IP25 index; Phytoplankton biomarker C25 HBI (Z) triene IP25 index; Phytoplankton biomarker Dinosterol IP25 index; Processes and impacts of climate change in the North Atlantic Ocean and the Canadian Arctic; Sea ice; SST; sterols; XRF  (1)
Publikationsart
Schlagwörter
Verlag/Herausgeber
Sprache
Erscheinungszeitraum
  • 1
    Buch
    Buch
    Paleo-environmental effects of the Mid-Pleistocene transition in the tropical Atlantic and equatorial Africa : = Mileu-veranderingen in de tropische Atlantische Oceaan en equatoriaal Afrika tijdens de Midden-Pleistocene klimaatsovergang (2003)
    Utrecht : Univ.
    Details Verfügbarkeit
    Schlagwort(e): climate change ; Dissertation ; Pleistocene ; environmental change ; Atlantic Ocean ; Africa ; Hochschulschrift ; Paläoklimatologie ; Mittelpleistozän ; Tropenklima ; Atlantischer Ozean Süd ; Zentralafrika
    Materialart: Buch
    Seiten: 187 S , graph. Darst., Kt
    ISBN: 9057440814
    Serie: Geologica Ultraiectina 223
    Sprache: Englisch
    Anmerkung: Zsfassung in niederländ. und dt. Sprache , Zugl.: Utrecht, Univ., Diss., 2003
    Standort Signatur Einschränkungen Verfügbarkeit
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    GEOMAR KATALOG
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  • 2
    Online-Ressource
    Online-Ressource
    The Holocene Sapropel S1 in the Ionian Sea : paleoceanography and geochemistry : (Teil B: Laborarbeit) (1998)
    Kiel
    Details Verfügbarkeit
    Schlagwort(e): Hochschulschrift
    Materialart: Online-Ressource
    Seiten: 1 Online-Ressource (108 Seiten = 5 MB) , Graphen, Karte
    Ausgabe: Online-Ausgabe 2023
    URL: https://oceanrep.geomar.de/id/eprint/50862/
    Sprache: Englisch
    Anmerkung: Zusammenfassung in deutscher und englischer Sprache
    Standort Signatur Einschränkungen Verfügbarkeit
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    GEOMAR KATALOG
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  • 3
    facet.materialart.
    Unbekannt
    Inorganic and organic geochemistry of sediment core GeoB16224-1 and geochemical data of suspended sediment samples (2017)
    PANGAEA
    In:  Supplement to: Zhang, Yancheng; Chiessi, Cristiano Mazur; Mulitza, Stefan; Sawakuchi, André Oliveira; Häggi, Christoph; Zabel, Matthias; Portilho-Ramos, Rodrigo Costa; Schefuß, Enno; Crivellari, Stefano; Wefer, Gerold (2017): Different precipitation patterns across tropical South America during Heinrich and Dansgaard-Oeschger stadials. Quaternary Science Reviews, 177, 1-9, https://doi.org/10.1016/j.quascirev.2017.10.012
    Details
    Publikationsdatum: 2023-06-15
    Beschreibung: Detailed knowledge about tropical South American precipitation patterns during Heinrich (H) and Dansgaard-Oeschger (DO) stadials provides relevant insights into the possible evolution of Amazonian hydroclimate under future climate change. Sediment core GeoB16224-1 (ca. 7°N), raised from a site in the continental slope off French Guiana in western equatorial Atlantic under the influence of the Amazon River discharge, documents the impacts of H and DO stadials on both inorganic (i.e., Fe/Ca record) and organic (i.e., alkenone C37 concentration and C37/C38 ratio) geochemistry between 41 and 13 ka BP. Our results show millennial-scale covariations of increased Fe/Ca values with decreased C37 concentration and C37/C38 ratios during H and DO stadials. Comparing our high temporal resolution data with previously published records from ca. 17°N to 4°S, we are able to differentiate the influence of H and DO stadials upon tropical South American precipitation. We find that records under the influence of the South American summer monsoon (e.g., western Amazon) and the northern edge of the Intertropical Convergence Zone (ITCZ) (e.g., northernmost South America) exhibit strong climate shifts during both H and DO stadials, but regions under the influence of the southern edge of the ITCZ (e.g., northeastern Brazil) experience a weaker reaction during DO stadials than during H stadials.
    Schlagwort(e): Center for Marine Environmental Sciences; GeoB; Geosciences, University of Bremen; MARUM
    Materialart: Dataset
    Format: application/zip, 6 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 4
    facet.materialart.
    Unbekannt
    Highly branched isoprenoid and sterol concentration and accumulation rates of sediment core MSM12/2-5-1 (2022)
    PANGAEA
    Details
    Publikationsdatum: 2024-02-05
    Schlagwort(e): (9Z)-2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyliden)pentadeca-9-ene, per unit mass total organic carbon; 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane, per unit mass total organic carbon; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, per unit mass total organic carbon; Accumulation rate, (9Z)-2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyliden)pentadeca-9-ene; Accumulation rate, 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane; Accumulation rate, 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol; AGE; Alkenone; ArcTrain; Calculated; DEPTH, sediment/rock; Gas chromatography - Mass spectrometry (GC-MS); GC; Gravity corer; IP25; Labrador Sea; Maria S. Merian; Meltwater pulse; MSM12/2; MSM12/2_647-1; MSM12/2-05-01; Phytoplankton biomarker Brassicasterol IP25 index; Phytoplankton biomarker C25 HBI (Z) triene IP25 index; Phytoplankton biomarker Dinosterol IP25 index; Processes and impacts of climate change in the North Atlantic Ocean and the Canadian Arctic; Sea ice; SST; sterols; XRF
    Materialart: Dataset
    Format: text/tab-separated-values, 1260 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 5
    facet.materialart.
    Unbekannt
    n-Alkane content and compound-specific δ¹³C values of soil samples, river samples, and marine surface samples (2016)
    PANGAEA
    In:  Supplement to: Herrmann, Nicole; Boom, Arnoud; Carr, Andrew S; Chase, Brian M; Granger, Robyn; Hahn, Annette; Zabel, Matthias; Schefuß, Enno (2016): Sources, transport and deposition of terrestrial organic material: A case study from southwestern Africa. Quaternary Science Reviews, 149, 215-229, https://doi.org/10.1016/j.quascirev.2016.07.028
    Details
    Publikationsdatum: 2024-04-11
    Beschreibung: Southwestern Africa's coastal marine mudbelt, a prominent Holocene sediment package, provides a valuable archive for reconstructing terrestrial palaeoclimates on the adjacent continent. While the origin of terrestrial inorganic material has been intensively studied, the sources of terrigenous organic material deposited in the mudbelt are yet unclear. In this study, plant wax derived n-alkanes and their compound-specific d13C in soils, flood deposits and suspension loads from regional fluvial systems and marine sediments are analysed to characterize the origin of terrestrial organic material in the southwest African mudbelt. Soils from different biomes in the catchments of the Orange River and small west coast rivers show on average distinct n-alkane distributions and compound-specific d13C values reflecting biome-specific vegetation types, most notably the winter rainfall associated Fynbos Biome of the southwestern Cape. In the fluvial sediment samples from the Orange River, changes in the n-alkane distributions and compound-specific d13C compositions reveal an overprint by local vegetation along the river's course. The smaller west coast rivers show distinct signals, reflecting their small catchment areas and particular vegetation communities. Marine surface sediments spanning a transect from the northern mudbelt (29°S) to St. Helena Bay (33°S) reveal subtle, but spatially coherent, changes in n-alkane distributions and compound-specific d13C, indicating the influence of Orange River sediments in the northern mudbelt, the increasing importance of terrigenous input from the adjacent western coastal biomes in the central mudbelt, and contributions from the Fynbos Biome to the southern mudbelt. These findings indicate the different sources of terrestrial organic material deposited in the mudbelt, and highlight the potential the mudbelt has to preserve evidence of environmental change from the adjacent continent.
    Schlagwort(e): Center for Marine Environmental Sciences; GeoB; Geosciences, University of Bremen; MARUM
    Materialart: Dataset
    Format: application/zip, 4 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
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