(Table DR1) Accelerator mass spectrometry radiocarbon dates and calendar ages of sediments from ODP Hole 162-984C

DOI

Paired planktic foraminiferal d18O and Mg/Ca data reveal trends of increasing temperatures (~3 °C) and salinities in the subpolar North Atlantic over the course of the Holocene, which were punctuated by abrupt events. The trends likely reflect an insolation-forced northward retreat of the boundary between polar and North Atlantic subsurface waters. The superimposed variability does not appear to be periodic, but tends to recur within a broad millennial band. The records provide convincing evidence of open-ocean cooling (nearly 2°C) and freshening during the 8.2 ka event, and suggest similar conditions at 9.3 ka. However, the two largest temperature oscillations in our record (~2°C) occurred during the past 4 k.y., suggesting a recent increase in temperature variability relative to the mid-Holocene, perhaps in response to neoglaciation, which began at about this time.

Supplement to: Came, Rosemarie E; Oppo, Delia W; McManus, Jerry F (2007): Amplitude and timing of temperature and salinity variability in the subpolar North Atlantic over the past 10 k.y. Geology, 35(4), 315-318

Identifier
DOI https://doi.org/10.1594/PANGAEA.721799
Related Identifier IsSupplementTo https://doi.org/10.1130/G23455A.1
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.721799
Provenance
Creator Came, Rosemarie E; Oppo, Delia W ORCID logo; McManus, Jerry F ORCID logo
Publisher PANGAEA
Publication Year 2007
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 231 data points
Discipline Earth System Research
Spatial Coverage (-24.082 LON, 61.425 LAT); North Atlantic Ocean
Temporal Coverage Begin 1995-07-28T08:20:00Z
Temporal Coverage End 1995-07-29T01:45:00Z