Indian Ocean glacial deoxygenation and respired carbon accumulation during mid-late Quaternary ice ages.
Indian Ocean glacial deoxygenation and respired carbon accumulation during mid-late Quaternary ice ages.
复制标题
DOI：
10.1038/s41467-023-40452-1
复制
发表时间：
2023-08-10
影响因子：
16.6
通讯作者：
Harrison RJ
中科院分区：
文献类型：
--
作者：
Chang L;Hoogakker BAA;Heslop D;Zhao X;Roberts AP;De Deckker P;Xue P;Pei Z;Zeng F;Huang R;Huang B;Wang S;Berndt TA;Leng M;Stuut JW;Harrison RJ
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. Ocean oxygenation regulates respired carbon storage and atmospheric CO2. This study applied a novel analysis using magnetic nanoparticle fossils and found glacial Indian Ocean oxygen decline and carbon accumulation to explain recent climate cycles.
登录
查看更多内容
古新世-始新世最热期间磁化石记录的微生物大量繁殖和氧合作用下降的耦合
影响因子：
16.6
作者：
Chang L;Harrison RJ;Zeng F;Berndt TA;Roberts AP;Heslop D;Zhao X
通讯作者：
Zhao X
影响因子：
3.6
作者：
BOYLE, EA
通讯作者：
BOYLE, EA
影响因子：
5.3
作者：
Jaccard, S. L.;Galbraith, E. D.;Thierstein, H. R.
通讯作者：
Thierstein, H. R.
影响因子：
18.3
作者：
Hoogakker, Babette A. A.;Elderfield, Henry;Rickaby, Rosalind E. M.
通讯作者：
Rickaby, Rosalind E. M.
影响因子：
3.5
作者：
Egli, Ramon;Chen, Amy P.;Horng, Chorng-Shern
通讯作者：
Horng, Chorng-Shern