GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
Filter
  • PANGAEA  (3)
  • 2020-2024  (3)
Publikationsart
Schlagwörter
Verlag/Herausgeber
Erscheinungszeitraum
Jahr
  • 1
    facet.materialart.
    Unbekannt
    Oligocene Biomarker Temperature Estimates from ODP Hole 154-929A and DSDP Hole 75-516F (2020)
    PANGAEA
    Details
    Publikationsdatum: 2024-01-09
    Beschreibung: Falling atmospheric CO2 levels led to cooling through the Eocene and the expansion of Antarctic ice sheets close to their modern size near the beginning of the Oligocene, a period of poorly documented climate. Here we present the first record of climate evolution across the entire Oligocene (33.9-23.0 Ma) based on new TEX86 Sea Surface Temperature (SST) estimates from southwestern Atlantic Deep Sea Drilling Project Site 516 (paleolatitude ~ 36°S) and western equatorial Atlantic Ocean Drilling Project Site 929 (paleolatitude ~ 0°), combined with a compilation of existing SST records and climate modeling. In this relatively low CO2 Oligocene world (~300-700 ppm), warm climates similar to those of the late Eocene continued with only brief interruptions, while the Antarctic ice sheet waxed and waned. SSTs are spatially heterogenous, but generally support late Oligocene warming coincident with declining atmospheric CO2. This Oligocene warmth, especially at high latitudes, belies a simple relationship between climate and atmospheric CO2 and/or ocean gateways, and is only partially explained by current climate models. Though the dominant climate drivers of this enigmatic Oligocene world remain unclear, our results help fill a gap in understanding past Cenozoic climates and the way long-term climate sensitivity responded to varying background climate states.
    Schlagwort(e): Deep Sea Drilling Project; DSDP; Ocean Drilling Program; ODP; Oligocene; TEX86
    Materialart: Dataset
    Format: application/zip, 2 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    DATA PANGAEA
  • 2
    facet.materialart.
    Unbekannt
    Oligocene Biomarker Temperature Estimates from DSDP Hole 75-516F (2020)
    PANGAEA
    Details
    Publikationsdatum: 2024-01-09
    Schlagwort(e): 72-516F; Acyclic glycerol dialkyl glycerol tetraether, fractional abundance; AGE; Branched and isoprenoid tetraether index; Crenarchaeol, fractional abundance; Crenarchaeol isomer, fractional abundance; Deep Sea Drilling Project; Depth, composite top; DEPTH, sediment/rock; Dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Glomar Challenger; Glycerol dialkyl glycerol tetraethers, fractional abundance Ia; Glycerol dialkyl glycerol tetraethers, fractional abundance IIa; Glycerol dialkyl glycerol tetraethers, fractional abundance IIIa; Leg72; Methane index; Monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; Ocean Drilling Program; ODP; Oligocene; Ring index; Sample code/label; Sample comment; Sample ID; Sea surface temperature; South Atlantic/CONT RISE; SST, from BAYSPAR (50th Percentile); SST, from BAYSPAR (5th Percentile); SST, from BAYSPAR (95th Percentile); SST, from TEX86H; Tetraether index of 86 carbon atoms; TEX86; Tricyclic glycerol dialkyl glycerol tetraether, fractional abundance; ΔRing index
    Materialart: Dataset
    Format: text/tab-separated-values, 1860 data points
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    DATA PANGAEA
  • 3
    facet.materialart.
    Unbekannt
    Oligocene Biomarker Temperature Estimates from ODP Hole 154-929A (2020)
    PANGAEA
    Details
    Publikationsdatum: 2024-01-09
    Schlagwort(e): 154-929A; Acyclic glycerol dialkyl glycerol tetraether, fractional abundance; AGE; Branched and isoprenoid tetraether index; Crenarchaeol, fractional abundance; Crenarchaeol isomer, fractional abundance; Deep Sea Drilling Project; Depth, composite top; DEPTH, sediment/rock; Dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Glycerol dialkyl glycerol tetraethers, fractional abundance Ia; Glycerol dialkyl glycerol tetraethers, fractional abundance Ib; Glycerol dialkyl glycerol tetraethers, fractional abundance Ic; Glycerol dialkyl glycerol tetraethers, fractional abundance IIa; Glycerol dialkyl glycerol tetraethers, fractional abundance IIIa; Joides Resolution; Leg154; Methane index; Monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; Ocean Drilling Program; ODP; Oligocene; Ring index; Ring index of tetraether index of 86 carbon atoms; Sample code/label; Sample comment; Sample ID; Sea surface temperature; South Atlantic Ocean; SST, from BAYSPAR (50th Percentile); SST, from BAYSPAR (5th Percentile); SST, from BAYSPAR (95th Percentile); SST, from TEX86H; Tetraether index of 86 carbon atoms; TEX86; Tricyclic glycerol dialkyl glycerol tetraether, fractional abundance; ΔRing index
    Materialart: Dataset
    Format: text/tab-separated-values, 2103 data points
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    DATA PANGAEA
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...