Indian Ocean glacial deoxygenation and respired carbon accumulation during mid-late Quaternary ice ages

Liao Chang (), Babette A. A. Hoogakker, David Heslop, Xiang Zhao, Andrew P. Roberts, Patrick Deckker, Pengfei Xue, Zhaowen Pei, Fan Zeng, Rong Huang, Baoqi Huang, Shishun Wang, Thomas A. Berndt, Melanie Leng, Jan-Berend W. Stuut and Richard J. Harrison
Additional contact information
Liao Chang: School of Earth and Space Sciences, Peking University
Babette A. A. Hoogakker: Heriot-Watt University
David Heslop: The Australian National University
Xiang Zhao: The Australian National University
Andrew P. Roberts: The Australian National University
Patrick Deckker: The Australian National University
Pengfei Xue: School of Earth and Space Sciences, Peking University
Zhaowen Pei: School of Earth and Space Sciences, Peking University
Fan Zeng: School of Earth and Space Sciences, Peking University
Rong Huang: School of Earth and Space Sciences, Peking University
Baoqi Huang: School of Earth and Space Sciences, Peking University
Shishun Wang: School of Earth and Space Sciences, Peking University
Thomas A. Berndt: School of Earth and Space Sciences, Peking University
Melanie Leng: British Geological Survey
Jan-Berend W. Stuut: NIOZ‐Royal Netherlands Institute for Sea Research and Utrecht University
Richard J. Harrison: University of Cambridge

Nature Communications, 2023, vol. 14, issue 1, 1-11

Abstract: Abstract Reconstructions of ocean oxygenation are critical for understanding the role of respired carbon storage in regulating atmospheric CO2. Independent sediment redox proxies are essential to assess such reconstructions. Here, we present a long magnetofossil record from the eastern Indian Ocean in which we observe coeval magnetic hardening and enrichment of larger, more elongated, and less oxidized magnetofossils during glacials compared to interglacials over the last ~900 ka. Our multi-proxy records of redox-sensitive magnetofossils, trace element concentrations, and benthic foraminiferal Δδ13C consistently suggest a recurrence of lower O2 in the glacial Indian Ocean over the last 21 marine isotope stages, as has been reported for the Atlantic and Pacific across the last glaciation. Consistent multi-proxy documentation of this repeated oxygen decline strongly supports the hypothesis that increased Indian Ocean glacial carbon storage played a significant role in atmospheric CO2 cycling and climate change over recent glacial/interglacial timescales.

Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-023-40452-1 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-40452-1

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-023-40452-1

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().