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Communication dans un congrès Année : 2017

The role of Late Veneer impacts in the evolution of Venus

G. Golabek
  • Fonction : Auteur
P. Tackley
  • Fonction : Auteur
Sean N. Raymond

Résumé

We study how different mechanisms contribute to changes in long term evolution. In particular, the primitive history (the first Gy) of terrestrial planets is heavily influenced by collisions. We investigate how the coupled evolution of Venus' atmosphere and mantle is modified by those impacts. We focus on volatile fluxes: atmospheric escape and mantle degassing. We observe that large impacts are unlikely to erode the atmosphere significantly. They are, on the contrary, an important source of volatiles for the primitive planet. Collisions also generate a lot of melting and rapidly dries the mantle through degassing. Without recycling of volatiles into the mantle (like in plate tectonics regime), the mantle is efficiently depleted.
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Dates et versions

hal-01622204, version 1 (24-10-2017)

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C. Gillmann, G. Golabek, P. Tackley, Sean N. Raymond. The role of Late Veneer impacts in the evolution of Venus. European Planetary Science Congress 2017, held 17-22 September, 2017 in Riga Latvia, id. EPSC2017-15, Sep 2017, Riga, Latvia. ⟨hal-01622204⟩
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