Physics
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..913g&link_type=abstract
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.913
Physics
Scientific paper
Mars, Venus and the Earth exhibit very diverse surface conditions as the result of the 4.5 billion years evolution that led to the planets we observe today. We propose to study the interaction between the atmosphere and the inner dynamics of terrestrial planets by modeling the long term evolution of Mars and Venus. This lets us investigate both the history of the surface conditions of these planetary bodies and the way mantle dynamics and atmospheric evolution are linked. We generate histories of the state of the atmosphere of these planets as a function of time. We propose to use the recent advances due to observation and modeling to constrain possible evolutions of the atmosphere of terrestrial planets with the help of isotopic data from Carbon, Nitrogen and Argon. CO2 is the main object of our study. The processes that are of interest here are atmospheric escape, both hydrodynamic (for early evolution) and non-thermal (during the late history of the planets) and mantle degassing.
Gillmann Cédric
Lognonné Philippe
Moreira Manuel
Tackley Paul
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