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  • Chemistry  (3)
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  • 1
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    Rapid δ18O and δ13C isotopic shifts in late Pleistocene marine varves on the California margin (2021)
    In:  http://aquaticcommons.org/id/eprint/15568 | 8 | 2014-11-06 00:55:50 | 15568
    Details
    Publication Date: 2021-07-08
    Description: Upper Pleistocene sediments on the continental slope off Northern California contain alternations of varves and bioturbation produced by fluctuations in intensity of the coastal upwelling system. Stable isotopic analyses of benthic Foraminifera across a particularly well developed varve/bioturbation sequence deposited ~26,000 years ago reveal rapid shifts of ~0.25‰ in δ18O and ~0.4‰ in δ13C. The δ18O shift occurs within a varved section. Based on varve counts, the isotopic change occurred in less than 100 years. Timing and magnitude of the shift coincide with similar shifts observed in almost all other high-resolution δ18O records that have been interpreted as primarily representing global in-volume fluctuations.
    Keywords: Chemistry ; Earth Sciences ; Oceanography ; PACLIM
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 83-86
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  • 2
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    The Younger Dryas and millenial-scale oceanographic variability in the Sulu Sea, tropical western Pacific (2021)
    In:  http://aquaticcommons.org/id/eprint/15621 | 8 | 2014-11-10 23:48:14 | 15621
    Details
    Publication Date: 2021-07-09
    Description: EXTRACT (SEE PDF FOR FULL ABSTRACT):A high resolution, AMS carbon-14-dated sediment record from the Sulu Sea clearly indicates the Younger Dryas climatic event affected the western equatorial Pacific. Presence of the Younger Dryas in the tropical western Pacific indicates this climatic event is not restricted to the North Atlantic nor to high latitudes, but is global in extent.
    Keywords: Chemistry ; Earth Sciences ; Oceanography ; PACLIM ; Ocean Drilling Program
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 205-215
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  • 3
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    Oceanographic variability at Clipperton Atoll since the 1880s: stable isotopic evidence from massive corals [abstract] (2021)
    In:  http://aquaticcommons.org/id/eprint/15808 | 8 | 2014-12-08 23:45:19 | 15808
    Details
    Publication Date: 2021-07-10
    Description: EXTRACT (SEE PDF FOR FULL ABSTRACT):Clipperton Atoll (10°18'N, 109°13'W), lies within the eastern Pacific elongated warm water pool centered at 10°N and is situated at the boundary of the North Equatorial Counter-Current (NECC) and westward-flowing eddy currents moving away from Central America. ... Fifteen coral cores were collected from massive heads of Porites lobata in April 1994 for the purpose of reconstructing oceanographic and climatic conditions at this open ocean site in the eastern Pacific.
    Keywords: Chemistry ; Oceanography ; PACLIM
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 201-201
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