Articles | Volume 18, issue 8
https://doi.org/10.5194/cp-18-1797-2022
© 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/cp-18-1797-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
09 Aug 2022
Research article |
| 09 Aug 2022
| 09 Aug 2022
Bottom water oxygenation changes in the southwestern Indian Ocean as an indicator for enhanced respired carbon storage since the last glacial inception
Institute of Geological Sciences, University of Bern, Bern, Switzerland
Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland
Lena Mareike Thöle
Institute of Geological Sciences, University of Bern, Bern, Switzerland
Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland
Department of Earth Sciences, Utrecht University, Utrecht, the Netherlands
Ingrid Stimac
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und
Meeresforschung, Bremerhaven, Germany
Walter Geibert
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und
Meeresforschung, Bremerhaven, Germany
Minoru Ikehara
Center for Advanced Marine Core Research, Kochi University, Kochi, Japan
Gerhard Kuhn
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und
Meeresforschung, Bremerhaven, Germany
Oliver Esper
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und
Meeresforschung, Bremerhaven, Germany
Samuel Laurent Jaccard
Institute of Geological Sciences, University of Bern, Bern, Switzerland
Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland
Institute of Earth Sciences, University of Lausanne, Lausanne, Switzerland
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- Paleoproductivity and deep-sea oxygenation in Cosmonaut Sea since the last glacial maximum: impact on atmospheric CO2 L. Hu et al. 10.3389/fmars.2023.1215048
- Impact of iron fertilisation on atmospheric CO2 during the last glaciation H. Saini et al. 10.5194/cp-19-1559-2023
- Climate-driven redox changes in the southern Scotia Sea over the last 35 kyr: Insights from sedimentary sulfur isotope J. Kim et al. 10.1016/j.palaeo.2024.112086
- Glacial expansion of carbon-rich deep waters into the Southwestern Indian Ocean over the last 630 kyr J. Pérez-Asensio et al. 10.1016/j.gloplacha.2023.104283
- Orbital-scale competition of biogenic carbonate and opal production and its implication on carbon cycle at Del Caño Rise in the Indian sector of the Southern Ocean H. Choi et al. 10.1016/j.palaeo.2025.113290
- Paleoceanographic evolution of surface and bottom waters at the Conrad Rise in the Indian sector of the Southern Ocean since the Last Glacial Maximum B. Khim et al. 10.1016/j.palaeo.2025.113332
- Sedimentary processes controlling gas hydrate accumulation in the Shenhu area of the northern South China Sea W. Chen et al. 10.3389/fmars.2025.1637686
- Southern Ocean Oxygenation Changes Inferred From Redox‐Sensitive Trace Metals Across Marine Isotope Stage 11 E. Rohde et al. 10.1029/2021GC009921
9 citations as recorded by crossref.
- Sea level changes and the Indian Summer Monsoon influence on chemical weathering and sediment deposition on the Ninetyeast Ridge over the past 21 ka M. Hossen et al. 10.1016/j.margeo.2025.107632
- Synergic role of frontal migration and silicic acid concentration in driving diatom productivity in the Indian sector of the Southern Ocean over the past 350 ka S. Shukla et al. 10.1016/j.marmicro.2023.102245
- Paleoproductivity and deep-sea oxygenation in Cosmonaut Sea since the last glacial maximum: impact on atmospheric CO2 L. Hu et al. 10.3389/fmars.2023.1215048
- Impact of iron fertilisation on atmospheric CO2 during the last glaciation H. Saini et al. 10.5194/cp-19-1559-2023
- Climate-driven redox changes in the southern Scotia Sea over the last 35 kyr: Insights from sedimentary sulfur isotope J. Kim et al. 10.1016/j.palaeo.2024.112086
- Glacial expansion of carbon-rich deep waters into the Southwestern Indian Ocean over the last 630 kyr J. Pérez-Asensio et al. 10.1016/j.gloplacha.2023.104283
- Orbital-scale competition of biogenic carbonate and opal production and its implication on carbon cycle at Del Caño Rise in the Indian sector of the Southern Ocean H. Choi et al. 10.1016/j.palaeo.2025.113290
- Paleoceanographic evolution of surface and bottom waters at the Conrad Rise in the Indian sector of the Southern Ocean since the Last Glacial Maximum B. Khim et al. 10.1016/j.palaeo.2025.113332
- Sedimentary processes controlling gas hydrate accumulation in the Shenhu area of the northern South China Sea W. Chen et al. 10.3389/fmars.2025.1637686
1 citations as recorded by crossref.
Latest update: 29 Oct 2025
Short summary
We present sedimentary redox-sensitive trace metal records from five sediment cores retrieved from the SW Indian Ocean. These records are indicative of oxygen-depleted conditions during cold periods and enhanced oxygenation during interstadials. Our results thus suggest that deep-ocean oxygenation changes were mainly controlled by ocean ventilation and that a generally more sluggish circulation contributed to sequestering remineralized carbon away from the atmosphere during glacial periods.
We present sedimentary redox-sensitive trace metal records from five sediment cores retrieved...
