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Coupled Evolution of Earth’s H2-rich Proto-atmosphere and Oxidized Magma Ocean: Efficient H2O Production through Dissolved H2 Transport and Atmospheric Buffering of the Magma Ocean Redox State

  • Authors: Tatsuya Yoshida, Kirara Arima, Naoki Terada, Takeshi Kuroda, Kiyoshi Kuramoto

Tatsuya Yoshida et al 2026 The Planetary Science Journal 7 .

  • Provider: AAS Journals

Caption: Figure 8.

System state just after the magma ocean solidification is finished as a function of the initial H2+H2O amount, normalized by the hydrogen molecular number in the present-day terrestrial seawater (NTO), and the initial bottom pressure of the magma ocean. The left and right columns show the results of Case 1 and Case 2, respectively. (a), (b) Total H2O amount normalized by NTO. (c), (d) Fraction of the atmospheric H2O amount to the total H2O amount. (e), (f) Total H2 amount normalized by NTO. (g, h) Fe3+/Fe2+ ratio in the whole mantle.

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