Articles | Volume 14, issue 2
https://doi.org/10.5194/esd-14-291-2023
https://doi.org/10.5194/esd-14-291-2023
Research article
 | 
21 Mar 2023
Research article |  | 21 Mar 2023

Multi-million-year cycles in modelled δ13C as a response to astronomical forcing of organic matter fluxes

Gaëlle Leloup and Didier Paillard

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Cited articles

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Baroni, I. R., Palastanga, V., and Slomp, C. P.: Enhanced Organic Carbon Burial in Sediments of Oxygen Minimum Zones Upon Ocean Deoxygenation, Front. Mar. Sci., 6, 839, https://doi.org/10.3389/fmars.2019.00839, 2020. a, b
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Records of past carbon isotopes exhibit oscillations. It is clear over very different time periods that oscillations of 400 kyr take place. Also, strong oscillations of approximately 8–9 Myr are seen over different time periods. While earlier modelling studies have been able to produce 400 kyr oscillations, none of them produced 8–9 Myr cycles. Here, we propose a simple model for the carbon cycle that is able to produce 8–9 Myr oscillations in the modelled carbon isotopes.
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