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PANGAEA
In:
Supplement to: Nürnberg, Dirk; Müller, A; Schneider, Ralph R (2000): Paleo-sea surface temperature calculations in the equatorial east Atlantik from Mg/Ca ratios in planktic foraminifera: A comparison to sea surface temperature estimates from U37K', oxygen isotopes, and foraminiferal transfer function. Paleoceanography, 15(1), 124-134, https://doi.org/10.1029/1999PA000370
Publication Date:
2023-05-12
Description:
We present two ~270 kyr paleo-sea surface temperature (SST) records from the Equatorial Divergence and the South Equatorial Current derived from Mg/Ca ratios in the planktic foraminifer Globigerinoides sacculifer. The present study suggests that the magnesium signature of G. sacculifer provides a seasonal SST estimate from the upper ~50 m of the water column generated during upwelling in austral low-latitude fall/winter. Common to both down-core records is a glacial-interglacial amplitude of ~3°-3.5°C for the last climatic changes and lower Holocene and glacial oxygen isotope stage 2 temperatures compared with interglacial stage 5.5 and glacial stage 6 temperatures, respectively. The comparison to published SST estimates from alkenones, oxygen isotopes, and foraminiferal transfer function from the same core material pinpoints discrepancies and conformities between methods.
Keywords:
GEOMAR; Helmholtz Centre for Ocean Research Kiel
Type:
Dataset
Format:
application/zip, 2 datasets
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