| PALEOCEANOGRAPHY |
Marine Isotope Stage 5/Termination II Data
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Oppo, D.W., L.D. Keigwin, J.F. McManus, and J.L. Cullen. 2001. Persistent suborbital climate variability in marine isotope
stage 5 and Termination II. Paleoceanography 16(3):280.
| Data Coverage |
North: 61 * South: 31.68 |
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West: -75.42 * East: -14.7 |
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Altitude: -2985 m |
Start Year: 156140 14C yr BP
* End Year: 57526 14C yr BP
Data: Please Cite Data Contributors!
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Summary: New surface water records from two high sedimentation rate sites, located in the western subtropical North Atlantic near the
axis of the Gulf Stream, provide clear evidence of suborbital climate variations through marine isotope stage (MIS) 5 persisting
even into the warm peak of the interglaciation (substage 5e). We found that the amplitude of suborbital climate oscillations
did not vary significantly for the whole of MIS 5, implying that ice volume has little or no influence on the amplitude of
suborbital climate variability in this region. Although some records suggest that longer suborbital variations (4--10 kyr)
during MIS 5 are linked to deepwater changes, none of the existing records is of sufficient resolution to assess if a linkage
occurred for oscillations shorter than 4 kyr. However, when examined in conjunction with published data from the Norwegian
Sea, new evidence from the subpolar North Atlantic suggests that coupled surface-deepwater oscillations occurred during the
penultimate deglaciation. This supports the hypothesis that during glacial and deglacial times, ocean-ice interactions and
deepwater variability amplify suborbital climate change at higher latitudes. We suggest that during the penultimate deglaciation
the North Atlantic deepwater source varied between Nordic Sea and open North Atlantic locations, in parallel with surface
temperature oscillations.
More Info on Paleoceanography Data |
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Parameters: delta O18 PDB (Globigerinoides ruber); delta O18 PDB (Neogloboquadrina pachyderma (right coiling)); delta C13 PDB (Cibicidoides wuellerstorfi); Neogloboquadrina pachyderma (left coiling) percent; Radiocarbon ages; delta O18 PDB (Cibicidoides wuellerstorfi); Lithic grains percent; delta C13 PDB (Globigerinoides ruber); Lithic grains per gram; radiocarbon years before 1950AD; Ice Rafted Debris percent; Depth below surface (cm)
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Complete XML Record: noaa-ocean-2563
(Last Revised: 2007-12-21 )
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DOC/NOAA/NESDIS/NCDC (National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce )
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| http://www.ncdc.noaa.gov/paleo/ |
| E-mail: bruce.a.bauer@noaa.gov |
| E-mail: paleo@noaa.gov |
Phone: 303-497-6280
Fax: 303-497-6513
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