Climate of the Past
Climate of the Past
CP
Articles | Volume 19, issue 10
Articles | Volume 19, issue 10
https://doi.org/10.5194/cp-19-1919-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-19-1919-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 10
Research article
 | 
12 Oct 2023
Research article |  | 12 Oct 2023

Glacial–interglacial seawater isotope change near the Chilean Margin as reflected by δ2H values of C37 alkenones

Katrin Hättig, Devika Varma, Stefan Schouten, and Marcel T. J. van der Meer

Supplement

https://doi.org/10.5194/cp-19-1919-2023-supplement

Data sets

Hydrogen isotopic composition of alkenones and oxygen isotopes of benthic foraminifera from ODP Site 202-1235 K. Hättig, D. Varma, M. T. J. van der Meer, and S. Schouten https://doi.org/10.1594/PANGAEA.958880

Age model for ODP Leg 202 Site 1235 and Site 1234. K. Hättig, D. Varma, M. T. J. van der Meer, G.-J. Reichart, and S. Schouten https://doi.org/10.1594/PANGAEA.957070

SST Proxies Chilean (ODP Leg 202 Site 1235 and Site 1234) and Angola Margin (ODP Leg 175 Site 1078 and Site 1079). D. Varma, K. Hättig, M. T. J. van der Meer, G.-J. Reichart, and S. Schouten https://doi.org/10.1594/PANGAEA.957090

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Short summary
Water isotopes, both hydrogen and oxygen, correlate with the salinity of the sea. Here we reconstruct the surface seawater isotopic composition during the last deglaciation based on the measured hydrogen isotopic composition of alkenones, organic compounds derived from haptophyte algae, and compared it to oxygen isotopes of calcite shells produced in the bottom water. Our results suggest that surface seawater experienced more freshening during the last 20 000 years than the bottom seawater.
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