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  • 1
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    Stable carbon and oxygen isotope ratios of Cibicidoides wuellerstorfi in the 500 to 340 kyr section of ODP Site 162-980 in the subpolar North Atlantic (1998)
    PANGAEA
    In:  Supplement to: Oppo, Delia W; McManus, Jerry F; Cullen, James L (1998): Abrupt climate cvents 500,000 to 340,000 years ago: evidence from subpolar North Atlantic sediments. Science, 279(5355), 1335-1338, https://doi.org/10.1126/science.279.5355.1335
    Details
    Publication Date: 2024-03-02
    Description: Subpolar North Atlantic proxy records document millennial-scale climate variations 500,000 to 340,000 years ago. The cycles have an approximately constant pacing that is similar to that documented for the last glacial cycle. These findings suggest that such climate variations are inherent to the late Pleistocene, regardless of glacial state. Sea surface temperature during the warm peak of Marine Isotope Stage 11 (MIS 11) varied by 0.5° to 1°C, less than the 4° to 4.5°C estimated during times of ice growth and the 3°C estimated for glacial maxima. Coherent deep ocean circulation changes were associated with glacial oscillations in sea surface temperature.
    Keywords: 162-980; AGE; Cibicidoides spp., δ18O; Cibicidoides wuellerstorfi, δ13C; COMPCORE; Composite Core; DEPTH, sediment/rock; Joides Resolution; Leg162; Mass spectrometer Finnigan MAT 252; Ocean Drilling Program; ODP; South Atlantic Ocean
    Type: Dataset
    Format: text/tab-separated-values, 822 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Stable carbon and oxygen isotope ratios of Cibicidoides wuellerstorfi in the 340 to 0 kyr section of ODP Site 162-980 in the subpolar North Atlantic (1999)
    PANGAEA
    In:  Supplement to: McManus, Jerry F; Oppo, Delia W; Cullen, James L (1999): A 0.5-million-year record of millennial-scale climate variability in the North Atlantic. Science, 283(5404), 971-975, https://doi.org/10.1126/science.283.5404.971
    Details
    Publication Date: 2024-03-02
    Description: Long, continuous, marine sediment records from the subpolar North Atlantic document the glacial modulation of regional climate instability throughout the past 0.5 million years. Whenever ice sheet size surpasses a critical threshold indicated by the benthic oxygen isotope (delta18O) value of 3.5 per mil during each of the past five glaciation cycles, indicators of iceberg discharge and sea-surface temperature display dramatically larger amplitudes of millennial-scale variability than when ice sheets are small. Sea-surface temperature oscillations of 1° to 2°C increase in size to approximately 4° to 6°C, and catastrophic iceberg discharges begin alternating repeatedly with brief quiescent intervals. The glacial growth associated with this amplification threshold represents a relatively small departure from the modern ice sheet configuration and sea level. Instability characterizes nearly all observed climate states, with the exception of a limited range of baseline conditions that includes the current Holocene interglacial.
    Keywords: 162-980; AGE; Cibicidoides wuellerstorfi, δ13C; Cibicidoides wuellerstorfi, δ18O; COMPCORE; Composite Core; DEPTH, sediment/rock; Joides Resolution; Leg162; Mass spectrometer Finnigan MAT 252; Ocean Drilling Program; ODP; South Atlantic Ocean
    Type: Dataset
    Format: text/tab-separated-values, 652 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
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