Articles | Volume 19, issue 9
https://doi.org/10.5194/bg-19-2523-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-19-2523-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
16 May 2022
Research article |
| 16 May 2022
| 16 May 2022
Drought recorded by Ba∕Ca in coastal benthic foraminifera
Department of Geology, Lund University, Sölvegatan 12, 223 62
Lund, Sweden
Christine Barras
LPG UMR 6112, University of Angers, Nantes Université, Le Mans Université, CNRS, 2 bd Lavoisier 49045, Angers CEDEX 01, France
Tom Jilbert
Department of Geosciences and Geography, Faculty of Science,
University of Helsinki, Gustaf Hällström katu 2, 00560 Helsinki,
Finland
Tomas Næraa
Department of Geology, Lund University, Sölvegatan 12, 223 62
Lund, Sweden
K. Mareike Paul
Department of Geosciences and Geography, Faculty of Science,
University of Helsinki, Gustaf Hällström katu 2, 00560 Helsinki,
Finland
Magali Schweizer
LPG UMR 6112, University of Angers, Nantes Université, Le Mans Université, CNRS, 2 bd Lavoisier 49045, Angers CEDEX 01, France
Helena L. Filipsson
Department of Geology, Lund University, Sölvegatan 12, 223 62
Lund, Sweden
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Short summary
The concentration of the trace metal barium (Ba) in coastal seawater is a function of continental input, such as riverine discharge. Our geochemical records of the severely hot and dry year 2018, and following wet year 2019, reveal that prolonged drought imprints with exceptionally low Ba concentrations in benthic foraminiferal calcium carbonates of coastal sediments. This highlights the potential of benthic Ba / Ca to trace past climate extremes and variability in coastal marine records.
The concentration of the trace metal barium (Ba) in coastal seawater is a function of...
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